Option in settings to only display years with actual content.

There should be an option in the module settings to only show years that actually have content.

Why? As it stands now, the module will show a set number of years whether they have content or not. The default displays three prior years. So if you have a new site (like I do) the module shows the current year (linked to archived content) and three prior years that link to nothing. There is a hack to work around this (changing the $num_to_display variable), but as things stand now, the administrator would have to remember at the start of a new year to increment that integer that is hardcoded into this variable.

The alternative would be to keep the $num_to_display variable as is, but if a lessor number of years have content, only those years would be displayed.