It's about the same as it's always been, which is fairly minimal. I upload a new Instagram photo every year or so, if that. I use Snapchat to look at my friend's posts. And I don't use Facebook. That's about it.
It has risen in direct correlation to how little work I have to do in the office. My boss was not in at all last week and I had even less to do than usual. I spent three days on the Internet or reading my book. Don't hate me for getting paid to do nothing.
This time of year I tend to use it more than I do in the first few months of the year since things are a bit quieter at work. I do find I'm a lot more browsy and less inclined to join in than I used to be though. The desire comes and goes.