Sklizeň | Plocha (ha) | Produkce (t) | Průměrný výnos (t/ha) | | 1971 | 8493 | 7167 | 0.84 | | 1972 | 8543 | 10175 | 1.19 | | 1973 | 8541 | 9805 | 1.15 | | 1974 | 8912 | 7007 | 0.79 | | 1975 | 9428 | 10085 | 1.08 | | 1976 | 9673 | 9020 | 0.93 | | 1977 | 9623 | 11243 | 1.17 | | 1978 | 9740 | 9159 | 0.94 | | 1979 | 9927 | 10600 | 1.07 | | 1980 | 10122 | 8680 | 0.86 | | 1981 | 10143 | 11560 | 1.14 | | 1982 | 9941 | 10990 | 1.11 | | 1983 | 9922 | 10504 | 1.06 | | 1984 | 10060 | 9309 | 0.92 | | 1985 | 10327 | 11479 | 1.11 | | 1986 | 9253 | 9194 | 0.99 | | 1987 | 10352 | 10484 | 1.01 | | 1988 | 10372 | 14045 | 1.35 | | 1989 | 10468 | 10795 | 1.03 | | 1990 | 10435 | 9123 | 0.87 | | 1991 | 10385 | 9782 | 0.95 | | 1992 | 10522 | 8538 | 0.81 | | 1993 | 10547 | 9417 | 0.89 | | 1994 | 10201 | 9220 | 0.9 | | 1995 | 10071 | 9770 | 0.97 | | 1996 | 9355 | 10294 | 1.13 | | 1997 | 7451 | 7412 | 0.99 | | 1998 | 5633 | 4896 | 0.87 | | 1999 | 5991 | 6543 | 1.08 | | 2000 | 6095 | 4864 | 0.798 | | 2001 | 6075 | 6621,4 | 1,09 |
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