This increase outpaces the rate of inflation based on U.S. consumer price index by 56 percent.
Might it be because of compounding inflation? 3% inflation for two years will be more than 6% inflation over two years. Saying that, I don't trust the inflation numbers my government (Canadian) releases.
"I appreciate SDF but it's a general-purpose server and the name doesn't make it obvious that it's about art." - Eugen Rochko