In the Counter module the Visitors "This Year" count is decreasing. How can I get it to increase instead?
I've checked the module and i can confirm that the behaviour of the module is like previously i explained in comments. So, it is not a problem related to a module. It's a problem related to marketing analysis. Probably the "Visits" and "Hits" are absolute values ( they are always increasing ). On the other hand, the "This Year" value is a calculated value for 365 last days.

At this time last year, you had lots of visitors.