How to get custom post type archive year in array format with cache support in WordPress ? ( Ported from the WordPress core )

get_custom_posts_archive_year.php

<?php
/**
 * @see the function ported from the WP core.
 * @see wp_get_archives() functions for more.
 * 
 * @author Ronak Vanpariya
 * 
 * @param are Optional
 * 
 * @return { array } of the object which having 'years' and 'posts' props.
 * using caching for the reducing database Load.
 */
function get_archive_years_bypost( $post_type = 'financials' , $limit = '' ) {
	global $wpdb ,$wp_locale;
	$last_changed = wp_cache_get_last_changed( 'posts' );
	$query   = "SELECT YEAR(post_date) AS `year`, count(ID) as posts FROM $wpdb->posts $join WHERE post_type = '$post_type' AND post_status = 'publish' GROUP BY YEAR(post_date) ORDER BY post_date DESC $limit";
	$key     = md5( $query );
	$key     = "wp_get_archives:$key:$last_changed";
	$results = wp_cache_get( $key, 'posts' );
	if ( ! $results ) {
		$results = $wpdb->get_results( $query );
		wp_cache_set( $key, $results, 'posts' );
	}
	return $results;
}
?>