Decline in hunt/fish licenses in SD

This is interesting considering SD doesn't have game and fish problems.  General decline in sales is charted over 5 years in this article.  Looks to me like the withdrawal from the outdoors is well underway.  I had always thought this was the time I'd get serious about getting back into ice fishing, once the chaos was over.  Non-resident fishing licenses drop 18% from 2016 high, -12% from last year.  Last winter was also awful for lake conditions.  I could see that making it a little tougher to get out here.  

rapidcityjournal.com/news/local/state-sees-m-decline-in-revenue-from-sale-of-hunting/article_46457f08-9015-5bfb-83fe-5e05e9760ea0.html