| Characteristic | Production in million metric tons |
|---|---|
| 2023 | 6.5 |
| 2022 | 8.2 |
| 2021 | 8.3 |
| 2020 | 8.5 |
| 2019 | 11.6 |
| 2018 | 13 |
| 2017 | 14.7 |
| 2016 | 15.9 |
| 2015 | 16.2 |
| 2014 | 17.3 |
| 2013 | 17.9 |
| 2012 | 19 |
| 2011 | 19.9 |
| 2010 | 21.5 |
| 2009 | 19.2 |
| 2008 | 24 |
| 2007 | 26 |
| 2006 | 25.8 |
| 2005 | 25.9 |
| 2004 | 26.5 |
| 2003 | 25.4 |
| 2002 | 26.2 |
| 2001 | 26.7 |
| 2000 | 29.7 |
| 1999 | 29.7 |
| 1998 | 29.2 |
| 1997 | 30.9 |
| 1996 | 28.9 |
| 1995 | 29.4 |
| 1994 | 29.7 |
| 1993 | 27.9 |
| 1992 | 26.7 |
| 1991 | 26.1 |
| 1990 | 26.1 |
| 1989 | 24.8 |
| 1988 | 25 |
| 1987 | 23.9 |
| 1986 | 22.7 |
| 1985 | 21.4 |
| 1984 | 21.4 |
| 1983 | 20.1 |
| 1982 | 18.5 |
| 1981 | 18.7 |
| 1980 | 18.1 |
| 1979 | 17.3 |
| 1978 | 16.4 |
| 1977 | 15.8 |
| 1976 | 15.1 |
| 1975 | 13.1 |
| 1974 | 15.1 |
| 1973 | 15.2 |
| 1972 | 14.1 |
| 1971 | 13 |
| 1970 | 12.8 |
| 1969 | 12.9 |
| 1968 | 12.3 |
| 1967 | 11.4 |
| 1966 | 11.3 |
| 1965 | 10.3 |
| 1964 | 9.7 |
| 1963 | 9.2 |
| 1962 | 8.8 |
| 1961 | 8.4 |
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Source
Source
Release date
December 2024
More information
Region
United States
Survey time period
1961 to 2023
Supplementary notes
Figures have been rounded.
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