The prices of gypsum fell 3.5% in January according to the latest Producer Price Index (PPI) released by the Bureau of Labor Statistics.
NAHB economist David Logan notes in a recent Eye on Housing blog post that gypsum prices have moderated after steep price hikes at the beginning of 2012, 2013 and 2014. From 2011-2014 prices paid for gypsum increased 1.0% every month, on average. Since then, however, the trend has been stable as prices have averaged monthly gains of 0.1%, roughly in line with inflation.
These contrasting trends are evidenced by the graph below, with red and green indicating times of increasing prices and price stability, respectively.
Read more in the Eye on Housing blog post, in which Logan contrasts the long-term trend of gypsum and ready-mix concrete prices.