单位:千头
时间范围:1988 - 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 | 17953.00 |
| 7 | 2019 | 18022.00 |
| 8 | 2018 | 18050.00 |
| 9 | 2017 | 18195.00 |
| 10 | 2016 | 18248.00 |
| 11 | 2015 | 18528.00 |
| 12 | 2014 | 18920.00 |
| 13 | 2013 | 19273.00 |
| 14 | 2012 | 19680.00 |
| 15 | 2011 | 19901.00 |
| 16 | 2010 | 19794.00 |
| 17 | 2009 | 20540.00 |
| 18 | 2008 | 20952.00 |
| 19 | 2007 | 21502.00 |
| 20 | 2006 | 21562.00 |
| 21 | 2005 | 21625.00 |
| 22 | 2004 | 23154.00 |
| 23 | 2003 | 25091.00 |
| 24 | 2002 | 26846.00 |
| 25 | 2001 | 27390.00 |
| 26 | 2000 | 27520.00 |
| 27 | 1999 | 28060.00 |
| 28 | 1998 | 28481.00 |
| 29 | 1997 | 31520.00 |
| 30 | 1996 | 35103.00 |
| 31 | 1995 | 39696.00 |
| 32 | 1994 | 43297.00 |
| 33 | 1993 | 48914.00 |
| 34 | 1992 | 52226.00 |
| 35 | 1991 | 54677.00 |
| 36 | 1990 | 57043.00 |
| 37 | 1989 | 58800.00 |
| 38 | 1988 | 59300.00 |
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