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 | 4741.00 |
| 7 | 2019 | 4648.00 |
| 8 | 2018 | 4713.00 |
| 9 | 2017 | 4538.00 |
| 10 | 2016 | 4422.00 |
| 11 | 1992 | 7519.00 |
| 12 | 1991 | 7380.00 |
| 13 | 1990 | 7383.00 |
| 14 | 1989 | 7626.00 |
| 15 | 1988 | 7915.00 |
| 16 | 1987 | 7955.00 |
| 17 | 1986 | 7930.00 |
| 18 | 1985 | 7793.00 |
| 19 | 1984 | 7782.00 |
| 20 | 1983 | 8211.00 |
| 21 | 1982 | 7910.00 |
| 22 | 1981 | 7770.00 |
| 23 | 1980 | 7794.00 |
| 24 | 1979 | 7965.00 |
| 25 | 1978 | 7733.00 |
| 26 | 1977 | 8151.00 |
| 27 | 1976 | 7668.00 |
| 28 | 1975 | 7827.00 |
| 29 | 1974 | 9138.00 |
| 30 | 1973 | 8839.00 |
| 31 | 1972 | 8882.00 |
| 32 | 1971 | 8546.00 |
| 33 | 1970 | 8126.00 |
| 34 | 1969 | 7969.00 |
| 35 | 1968 | 7633.00 |
| 36 | 1967 | 7284.00 |
| 37 | 1966 | 8126.00 |
| 38 | 1965 | 7940.00 |
| 39 | 1964 | 7466.00 |
| 40 | 1963 | 7251.00 |
| 41 | 1962 | 6713.00 |
| 42 | 1961 | 6122.00 |
| 43 | 1960 | 6008.00 |
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