单位:千头
时间范围:1990 - 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 | 8221.00 |
| 7 | 2019 | 12524.00 |
| 8 | 2018 | 5627.00 |
| 9 | 2017 | 1926.00 |
| 10 | 2016 | 1874.00 |
| 11 | 2015 | 1631.00 |
| 12 | 2014 | 2001.00 |
| 13 | 2013 | 2136.00 |
| 14 | 2012 | 1928.00 |
| 15 | 2011 | 1985.00 |
| 16 | 2010 | 2541.00 |
| 17 | 2009 | 2483.00 |
| 18 | 2008 | 2202.00 |
| 19 | 2007 | 4563.00 |
| 20 | 2006 | 6716.00 |
| 21 | 2005 | 1190.00 |
| 22 | 2004 | 890.00 |
| 23 | 2003 | 822.00 |
| 24 | 2002 | 999.00 |
| 25 | 2001 | 998.00 |
| 26 | 2000 | 1020.00 |
| 27 | 1999 | 1084.00 |
| 28 | 1998 | 1434.00 |
| 29 | 1997 | 500.00 |
| 30 | 1996 | 482.00 |
| 31 | 1995 | 33.00 |
| 32 | 1993 | 226.00 |
| 33 | 1992 | 87.00 |
| 34 | 1991 | 941.00 |
| 35 | 1990 | 2.00 |
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