单位:千头
时间范围:1960 - 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 | 12724.00 |
| 7 | 2019 | 12816.00 |
| 8 | 2018 | 12987.00 |
| 9 | 2017 | 13091.00 |
| 10 | 2016 | 13114.00 |
| 11 | 1992 | 15858.00 |
| 12 | 1991 | 15920.00 |
| 13 | 1990 | 16056.00 |
| 14 | 1989 | 15930.00 |
| 15 | 1988 | 15787.00 |
| 16 | 1987 | 16607.00 |
| 17 | 1986 | 16927.00 |
| 18 | 1985 | 17252.00 |
| 19 | 1984 | 17723.00 |
| 20 | 1983 | 17703.00 |
| 21 | 1982 | 17675.00 |
| 22 | 1981 | 17699.00 |
| 23 | 1980 | 18198.00 |
| 24 | 1979 | 18363.00 |
| 25 | 1978 | 18566.00 |
| 26 | 1977 | 18741.00 |
| 27 | 1976 | 18810.00 |
| 28 | 1975 | 20342.00 |
| 29 | 1974 | 20192.00 |
| 30 | 1973 | 14103.00 |
| 31 | 1972 | 13411.00 |
| 32 | 1971 | 13055.00 |
| 33 | 1970 | 12820.00 |
| 34 | 1969 | 12648.00 |
| 35 | 1968 | 12618.00 |
| 36 | 1967 | 12821.00 |
| 37 | 1966 | 12562.00 |
| 38 | 1965 | 12197.00 |
| 39 | 1964 | 12145.00 |
| 40 | 1963 | 12243.00 |
| 41 | 1962 | 12186.00 |
| 42 | 1961 | 12394.00 |
| 43 | 1960 | 11479.00 |
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