tornadoes.xls
Sheet1
| Year | Tornadoes | Census (thousands) |
| 1953 | 421 | 158956 |
| 1954 | 550 | 161884 |
| 1955 | 593 | 165069 |
| 1956 | 504 | 168088 |
| 1957 | 856 | 171187 |
| 1958 | 564 | 174149 |
| 1959 | 604 | 177135 |
| 1960 | 616 | 179979 |
| 1961 | 697 | 182992 |
| 1962 | 657 | 185771 |
| 1963 | 464 | 188483 |
| 1964 | 704 | 191141 |
| 1965 | 906 | 193526 |
| 1966 | 585 | 195576 |
| 1967 | 926 | 197457 |
| 1968 | 660 | 199399 |
| 1969 | 608 | 201385 |
| 1970 | 653 | 203984 |
| 1971 | 888 | 206827 |
| 1972 | 741 | 209284 |
| 1973 | 1102 | 211357 |
| 1974 | 947 | 213342 |
| 1975 | 920 | 215465 |
| 1976 | 835 | 217563 |
| 1977 | 852 | 219760 |
| 1978 | 788 | 222095 |
| 1979 | 852 | 224567 |
| 1980 | 866 | 227225 |
| 1981 | 783 | 229466 |
| 1982 | 1046 | 231664 |
| 1983 | 931 | 233792 |
| 1984 | 907 | 235825 |
| 1985 | 684 | 237924 |
| 1986 | 764 | 240133 |
| 1987 | 656 | 242289 |
| 1988 | 702 | 244499 |
| 1989 | 856 | 246819 |
| 1990 | 1133 | 249623 |
| 1991 | 1132 | 252981 |
| 1992 | 1298 | 256514 |
| 1993 | 1176 | 259919 |
| 1994 | 1082 | 263126 |
| 1995 | 1235 | 266278 |
| 1996 | 1173 | 269394 |
| 1997 | 1148 | 272647 |
| 1998 | 1449 | 275854 |
| 1999 | 1340 | 279040 |
| 2000 | 1076 | 282224 |
| 2001 | 1213 | 285318 |
| 2002 | 934 | 288369 |
| 2003 | 1372 | 290447 |
| 2004 | 1819 | 293191 |
| 2005 | 1194 | 295895 |
| 2006 | 1103 | 298754 |
| 2007 | 1098 | 301621 |
| 2008 | 1691 | 304059 |