There are lots of headlines in the dairy news that milk production is continuing to grow. There may be fewer cows, but the remaining cows are producing more milk. This post will look at the other side of the supply/demand ratio, specifically, the decline in milk consumption. In the May 26 post to this blog, the declining consumption of fluid milk was analyzed based on consumption data. Not only was it declining, but the decline also appeared to be accelerating. This post will update the fluid milk "disappearance" by analyzing Class I milk production in the Federal Milk Marketing Orders.
Fluid milk is perishable and requires refrigeration. It cannot be frozen or economically stored for long periods of time. Therefore, the link between production of fluid milk and consumption is firm and tightly linked. What is produced must be sold within a very limited time.
Chart I below shows the monthly production of Class I milk. For years per capita consumption has been declining, but population growth has keep the Class I milk category stable. But, starting in 2017, the total Class I milk category started a decline. As we get more data on the decline, it becomes obvious that the decline is accelerating. The trend line in Chart I was extended through 2019. By the end of 2019, Class I milk will be down to about 3000 million pounds per year by this analysis. Compared to 2016, that would represent a 13 percent drop. Declines typically shrink in pounds as they reach a new plateau. The decline in dairy milk is not following that pattern. Its volume decline is increasing with time.
Chart I - Class I Milk per Month |
Unless something changes, the decline will continue and Class I milk will have a reduced impact on the "Uniform" price and, all other things equal", the "Uniform" price will decline.
Chart II - Class I Milk as a percent of Total Milk |
Chart III - Class I Milk Reduction from Prior Year |
The decline in drinking milk appears to be the start of a long-term trend and the depth of the trend is growing. It has to be faced directly and plans made to insure the financial future of the dairy industry with less Class I milk.
It's clear that fluid consumption is decreasing; however, why did you choose to use a quadratic trend line that suggests it has changed direction (increasing to decreasing)during the reporting period. Obviously, it has not. Using the quadratic makes the trend look even worse than it actually is in the more recent months. This trend is truly downward and maybe even accelerating, but the trend line does not fit the data properly.
ReplyDeleteThank you for your comment. The trend-line is actually a second order polynomial. A straight line would certainly not work for an accelerating decline and other options also do not fit. If you know of a better mathematical form I would be glad to try it. I did keep the polynomial to a second order to keep it from being "overdone."
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