subscriptions = read_subscriptions
now = Time.now
last_year = Time.new(now.year - 1, now.month, now.day).to_date
-subscriptions.each_pair do |subscription_id, data|
+subscriptions.sort.each do |subscription_id, data|
if data['membership_fee_paid_on'] && last_year < data['membership_fee_paid_on']
puts data['email']
end