Fix performance of percentile calculation for annual reports (#32765)

app/models/annual_report/statuses_per_account_count.rb

@@ -0,0 +1,15 @@
+# frozen_string_literal: true
+
+# == Schema Information
+#
+# Table name: annual_report_statuses_per_account_counts
+#
+#  id             :bigint(8)        not null, primary key
+#  year           :integer          not null
+#  account_id     :bigint(8)        not null
+#  statuses_count :bigint(8)        not null
+#
+
+class AnnualReport::StatusesPerAccountCount < ApplicationRecord
+  # This table facilitates percentile calculations
+end