sub-menu-accordion + month

<div class="accordionContent">
        <ul class="sub-menu1"><?php
         $y = date( 'Y' ); // The current year.

while ( $y > 2000 ) { // Pick a reasonable year you want this loop to end at, to save your server some time.

    $m = 12; // For December
    while ( $m > 0 ) {

        $args = array(
            'posts_per_page' => -1,
            'cat'        => 7,
            'year'       => $y,
            'monthnum'   => $m
        );
        $cat_q = new WP_Query( $args );
        if ( $cat_q->have_posts() ) {
            //echo $m; // This will only echo the month number, but you can figure out how to substitute it for the month's name, I'm sure.
            $p = 0;
            while ( $cat_q->have_posts() ) {
                $cat_q->the_post();
                $p++;
            }
            $monthNum = $m;
            $monthName = date("F", mktime(0, 0, 0, $monthNum, 10));
            echo '<li><a href="2956?month=';
            echo $m;
            echo '&year=';
            echo $y;
            echo '&cat=7">';
            echo $monthName;
            echo '&nbsp';
            echo $y;
            echo '(';
            echo $p;
            echo ')';
            echo '</a></li>';
            }
        wp_reset_query();
        $m--;
    }
    $y--;
}
?>
        </ul>
        </div>