array(4) {
  [0]=>
  string(4) "2020"
  [1]=>
  string(4) "2021"
  [2]=>
  string(4) "2022"
  [3]=>
  string(4) "2023"
}
array(4) {
  [0]=>
  string(4) "2020"
  [1]=>
  string(4) "2021"
  [2]=>
  string(4) "2022"
  [3]=>
  string(4) "2023"
}