https://www.ers.usda.gov/webdocs/publications/37059/49131_sp...
I'm less interested in the 30 year timespan, because other huge changes have occurred in that timespan, from shifts in agriculture to the collapse of honey bee populations due to the Varroa mite.
By way of context: in the 30 year timespan covered by their document, almond acreage in California has more than tripled.
Or rate the cube root of 200% (30 year period = 3 * 10 year periods) = 26% increase in cost
In 2017, the average price of pollination was $184.43/hive. That is up from $125/hive in 2011.
- The CPI has doubled in the last 30 years; your link doesn't mention constant dollars that I noticed.
- The line chart ends in 2011.
- The sources of fees according to the chart in your link are very concentrated in almonds, which suggests they would be heavily impacted by the ups and downs of that industry.
So, I'm not saying your assertion is false, but the most I can say about the link is that it doesn't contradict you.