单位:千头
时间范围:1972 - 2025
数据来源:美国农业部
| 序号 | 时间(年) | 数据(千头) |
|---|---|---|
| 1 | 2025 | |
| 2 | 2024 | |
| 3 | 2023 | |
| 4 | 2022 | |
| 5 | 2021 | |
| 6 | 2020 | 8000.00 |
| 7 | 2019 | 7900.00 |
| 8 | 2018 | 7700.00 |
| 9 | 2017 | 7485.00 |
| 10 | 2016 | 7100.00 |
| 11 | 2015 | 6850.00 |
| 12 | 2014 | 6750.00 |
| 13 | 2013 | 6700.00 |
| 14 | 2012 | 6800.00 |
| 15 | 2011 | 6900.00 |
| 16 | 2010 | 7000.00 |
| 17 | 2009 | 6875.00 |
| 18 | 2008 | 6754.00 |
| 19 | 2007 | 6732.00 |
| 20 | 2006 | 6925.00 |
| 21 | 2005 | 7275.00 |
| 22 | 2004 | 7800.00 |
| 23 | 2003 | 8000.00 |
| 24 | 2002 | 8200.00 |
| 25 | 2001 | 8600.00 |
| 26 | 2000 | 8460.00 |
| 27 | 1999 | 8400.00 |
| 28 | 1998 | 7240.00 |
| 29 | 1997 | 7400.00 |
| 30 | 1996 | 6775.00 |
| 31 | 1995 | 8300.00 |
| 32 | 1994 | 7500.00 |
| 33 | 1993 | 7000.00 |
| 34 | 1992 | 6573.00 |
| 35 | 1991 | 9450.00 |
| 36 | 1990 | 9018.00 |
| 37 | 1989 | 9569.00 |
| 38 | 1988 | 9773.00 |
| 39 | 1987 | 9514.00 |
| 40 | 1986 | 9036.00 |
| 41 | 1985 | 7885.00 |
| 42 | 1984 | 8023.00 |
| 43 | 1983 | 8233.00 |
| 44 | 1982 | 8550.00 |
| 45 | 1981 | 8400.00 |
| 46 | 1980 | 8315.00 |
| 47 | 1979 | 7930.00 |
| 48 | 1978 | 7725.00 |
| 49 | 1977 | 7490.00 |
| 50 | 1976 | 7360.00 |
| 51 | 1975 | 7195.00 |
| 52 | 1974 | 5078.00 |
| 53 | 1973 | 5045.00 |
| 54 | 1972 | 5040.00 |
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