diff --git a/app/services/stats.rb b/app/services/stats.rb
index c306ac471..559c08577 100644
--- a/app/services/stats.rb
+++ b/app/services/stats.rb
@@ -2,12 +2,12 @@
 
 module Stats
   def self.racer_days_by_discipline(years)
-    if Rails.cache.read("racer_days_by_discipline").present?
-      return Rails.cache.read("racer_days_by_discipline")
+    if Rails.cache.read("racer_days_by_discipline #{years}").present?
+      return Rails.cache.read("racer_days_by_discipline #{years}")
     end
 
     chart_data = racer_days_by_discipline_query(years)
-    Rails.cache.write("racer_days_by_discipline", chart_data, expires_in: 12.hours)
+    Rails.cache.write("racer_days_by_discipline #{years}", chart_data, expires_in: 12.hours)
     chart_data
   end
 
@@ -34,12 +34,12 @@ def self.racer_days_by_discipline_query(years)
   end
 
   def self.racers_by_discipline(years)
-    if Rails.cache.read("racers_by_discipline").present?
-      return Rails.cache.read("racers_by_discipline")
+    if Rails.cache.read("racers_by_discipline #{years}").present?
+      return Rails.cache.read("racers_by_discipline #{years}")
     end
 
     chart_data = racers_by_discipline_query(years)
-    Rails.cache.write("racers_by_discipline", chart_data, expires_in: 12.hours)
+    Rails.cache.write("racers_by_discipline #{years}", chart_data, expires_in: 12.hours)
     chart_data
   end
 
@@ -66,19 +66,19 @@ def self.racers_by_discipline_query(years)
   end
 
   def self.memberships(years)
-    return Rails.cache.read("memberships") if Rails.cache.read("memberships").present?
+    return Rails.cache.read("memberships #{years}") if Rails.cache.read("membership #{years}").present?
 
     chart_data = [{ name: "Memberships", data: [] }]
     years.each do |year|
       res = LineItem.where(year: year, type: "LineItems::Membership").count
       chart_data[0][:data].push(res)
     end
-    Rails.cache.write("memberships", chart_data, expires_in: 12.hours)
+    Rails.cache.write("memberships #{years}", chart_data, expires_in: 12.hours)
     chart_data
   end
 
   def self.total_racer_days(years)
-    return Rails.cache.read("total_racer_days") if Rails.cache.read("total_racer_days").present?
+    return Rails.cache.read("total_racer_days #{years}") if Rails.cache.read("total_racer_days #{years}").present?
 
     chart_data = [{ name: "Total Racer Days", data: [] }]
     years.each do |year|
@@ -87,12 +87,12 @@ def self.total_racer_days(years)
                   .where.not(person_id: nil).count
       chart_data[0][:data].push(res)
     end
-    Rails.cache.write("total_racer_days", chart_data, expires_in: 12.hours)
+    Rails.cache.write("total_racer_days #{years}", chart_data, expires_in: 12.hours)
     chart_data
   end
 
   def self.total_racers(years)
-    return Rails.cache.read("total_racers") if Rails.cache.read("total_racers").present?
+    return Rails.cache.read("total_racers #{years}") if Rails.cache.read("total_racers #{years}").present?
 
     chart_data = [{ name: "Racers", data: [] }]
     years.each do |year|
@@ -102,12 +102,12 @@ def self.total_racers(years)
                   .count(:person_id)
       chart_data[0][:data].push(res)
     end
-    Rails.cache.write("total_racers", chart_data, expires_in: 12.hours)
+    Rails.cache.write("total_racers #{years}", chart_data, expires_in: 12.hours)
     chart_data
   end
 
   def self.racer_days_by_gender(years)
-    return Rails.cache.read("racer_days_by_gender") if Rails.cache.read("racer_days_by_gender").present?
+    return Rails.cache.read("racer_days_by_gender #{years}") if Rails.cache.read("racer_days_by_gender #{years}").present?
 
     chart_data = [
       { name: "Not Specified", data: [] },
@@ -124,12 +124,12 @@ def self.racer_days_by_gender(years)
       chart_data[2][:data].push(res["M"] || 0)
       chart_data[3][:data].push(res["NB"] || 0)
     end
-    Rails.cache.write("racer_days_by_gender", chart_data, expires_in: 12.hours)
+    Rails.cache.write("racer_days_by_gender #{years}", chart_data, expires_in: 12.hours)
     chart_data
   end
 
   def self.racers_by_gender(years)
-    return Rails.cache.read("racers_by_gender") if Rails.cache.read("racers_by_gender").present?
+    return Rails.cache.read("racers_by_gender #{years}") if Rails.cache.read("racers_by_gender #{years}").present?
 
     chart_data = [
       { name: "Not Specified", data: [] },
@@ -146,12 +146,12 @@ def self.racers_by_gender(years)
       chart_data[2][:data].push(res["M"] || 0)
       chart_data[3][:data].push(res["NB"] || 0)
     end
-    Rails.cache.write("racers_by_gender", chart_data, expires_in: 12.hours)
+    Rails.cache.write("racers_by_gender #{years}", chart_data, expires_in: 12.hours)
     chart_data
   end
 
   def self.gender_ratio(years)
-    return Rails.cache.read("gender_ratio") if Rails.cache.read("gender_ratio").present?
+    return Rails.cache.read("gender_ratio #{years}") if Rails.cache.read("gender_ratio #{years}").present?
 
     chart_data = [
       { name: "Not Specified", data: [] },
@@ -170,12 +170,12 @@ def self.gender_ratio(years)
       chart_data[2][:data].push((counts[2] / total).round(2))
       chart_data[3][:data].push((counts[3] / total).round(2))
     end
-    Rails.cache.write("gender_ratio", chart_data, expires_in: 12.hours)
+    Rails.cache.write("gender_ratio #{years}", chart_data, expires_in: 12.hours)
     chart_data
   end
 
   def self.racer_days_gender_ratio(years)
-    return Rails.cache.read("racer_days_gender_ratio") if Rails.cache.read("racer_days_gender_ratio").present?
+    return Rails.cache.read("racer_days_gender_ratio #{years}") if Rails.cache.read("racer_days_gender_ratio #{years}").present?
 
     chart_data = [
       { name: "Not Specified", data: [] },
@@ -194,12 +194,12 @@ def self.racer_days_gender_ratio(years)
       chart_data[2][:data].push((counts[2] / total).round(2))
       chart_data[3][:data].push((counts[3] / total).round(2))
     end
-    Rails.cache.write("racer_days_gender_ratio", chart_data, expires_in: 12.hours)
+    Rails.cache.write("racer_days_gender_ratio #{years}", chart_data, expires_in: 12.hours)
     chart_data
   end
 
   def self.total_juniors(years)
-    return Rails.cache.read("total_juniors") if Rails.cache.read("total_juniors").present?
+    return Rails.cache.read("total_juniors #{years}") if Rails.cache.read("total_juniors #{years}").present?
 
     chart_data = [{ name: "Juniors", data: [] }]
     years.each do |year|
@@ -209,7 +209,7 @@ def self.total_juniors(years)
                   .count(:person_id)
       chart_data[0][:data].push(res)
     end
-    Rails.cache.write("total_juniors", chart_data, expires_in: 12.hours)
+    Rails.cache.write("total_juniors #{years}", chart_data, expires_in: 12.hours)
     chart_data
   end
 end