From 2015 to 2019, consumer stocks of cast iron in Minnesota and Wisconsin showed a consistent declining trend, dropping from 6.58 thousand metric tons to 1.37 thousand metric tons. This represents a significant year-on-year reduction, particularly pronounced between 2017 and 2019. The compound annual growth rate (CAGR) over this five-year period underscores a substantial decrease in consumer stocks.

In 2023, the continuation of this trend can be inferred before considering forecasts. Looking forward:

Monitor any technological advancements or changes in consumer preferences that might revive the demand for cast iron.
Watch for economic conditions or policy changes affecting the manufacturing and construction sectors, as these are principal consumers of cast iron.
Consider international trade dynamics and competition, which could impact local stock levels and pricing.