Shawn,
You must be kidding!! I think mine goes up every year even when my volume and payroll goes down.
But, remember, depending upon many factors they do audits of your company every year as to sales/volume, payroll, etc and determine if you paid enough last year. Then, they adjust your rates for this year and maybe next year. All said and done it is rather like your property taxes, they are three years behind. Thus, all the factors may be going down but your rates still go up because of where you were two years ago. Clear as mud but they make it difficult for us simple welders to figure out and keep track of.
Have a Great Day, Brent