Removing latest post from loop (offset not working)

Hi,

I’m trying to remove the latest post form my post loop that spits out posts and categorises them into year. I figured that adding ‘offset => 1 to the array would do the trick but that’s not working. Any ideas what I’m doing wrong?

This is my function:

function posts_by_year() {
  // array to use for results
  $years = array();

  // get posts from WP
  $posts = get_posts(array(
    'numberposts' => -1,
    'orderby' => 'post_date',
    'order' => 'DESC',
    'post_type' => 'post',
    'post_status' => 'publish',
    'offset' => 1
  ));

  // loop through posts, populating $years arrays
  foreach($posts as $post) {
    $years[date('Y', strtotime($post->post_date))][] = $post;
  }

  // reverse sort by year
  krsort($years);

  return $years;
}

And my loop:

<?php foreach(posts_by_year() as $year => $posts) : ?>
	<h2><?php echo $year; ?></h2>
	<ul>
<?php foreach($posts as $post) : setup_postdata($post); ?>
<li>
<a href="<?php the_permalink(); ?>"><?php the_title(); ?></a>
</li>
<?php endforeach; ?>
</ul>
<?php endforeach; ?>