单位:千头
时间范围:1975 - 2024
数据来源:美国农业部
| 序号 | 时间(年) | 数据(千头) |
|---|---|---|
| 1 | 2024 | |
| 2 | 2023 | |
| 3 | 2022 | |
| 4 | 2021 | |
| 5 | 2020 | |
| 6 | 2019 | 7645.00 |
| 7 | 2018 | 7485.00 |
| 8 | 2017 | 7205.00 |
| 9 | 2016 | 6995.00 |
| 10 | 2015 | 6725.00 |
| 11 | 2014 | 6485.00 |
| 12 | 2013 | 6260.00 |
| 13 | 2012 | 6180.00 |
| 14 | 2011 | 6175.00 |
| 15 | 2010 | 6100.00 |
| 16 | 2009 | 6200.00 |
| 17 | 2008 | 6248.00 |
| 18 | 2007 | 6256.00 |
| 19 | 2006 | 6219.00 |
| 20 | 2005 | 6384.00 |
| 21 | 2004 | 6524.00 |
| 22 | 2003 | 6550.00 |
| 23 | 2002 | 6450.00 |
| 24 | 2001 | 6362.00 |
| 25 | 2000 | 6274.00 |
| 26 | 1999 | 6275.00 |
| 27 | 1998 | 6120.00 |
| 28 | 1997 | 6492.00 |
| 29 | 1996 | 6351.00 |
| 30 | 1995 | 6101.00 |
| 31 | 1994 | 5873.00 |
| 32 | 1993 | 5700.00 |
| 33 | 1992 | 5575.00 |
| 34 | 1991 | 6031.00 |
| 35 | 1990 | 6408.00 |
| 36 | 1989 | 6385.00 |
| 37 | 1988 | 6331.00 |
| 38 | 1987 | 6182.00 |
| 39 | 1986 | 6149.00 |
| 40 | 1985 | 5983.00 |
| 41 | 1984 | 5782.00 |
| 42 | 1983 | 5618.00 |
| 43 | 1982 | 5466.00 |
| 44 | 1981 | 5289.00 |
| 45 | 1980 | 5090.00 |
| 46 | 1979 | 5161.00 |
| 47 | 1978 | 5143.00 |
| 48 | 1977 | 5166.00 |
| 49 | 1976 | 4314.00 |
| 50 | 1975 | 4315.00 |
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