Track Trends
Year |
Start |
End |
Days |
Races |
Avg. Att. |
Avg. Han. |
1966 | Apr 23 | Sep 5 | 51 | 393 | 3,087 | 126,392 |
1967 | May 20 | Sep 4 | 44 | 348 | 2,779 | 122,811 |
1968 | May 18 | Sep 2 | 48 | 375 | 2,642 | 120,173 |
1969 | May 17 | Sep 7 | 48 | 388 | 2,958 | 132,811 |
1970 | May 16 | Sep 13 | 51 | 430 | 2,838 | 142,538 |
1971 | May 15 | Sep 12 | 53 | 429 | 2,780 | 94,150 |
1972 | May 13 | Sep 10 | 54 | 426 | 2,047 | 95,685 |
1973 | May 12 | Sep 9 | 54 | 426 | 1,975 | 100,445 |
1974 | May 11 | Sep 8 | 54 | 412 | 2,004 | 167,886 |
1975 | May 3 | Sep 14 | 54 | 412 | 2,311 | 192,638 |
1976 | May 1 | Sep 19 | 56 | 429 | 2,161 | 195,593 |
1977 | Apr 30 | Sep 18 | 56 | 429 | 2,180 | 208,606 |
1978 | Apr 29 | Oct 1 | 58 | 429 | 1,994 | 206,339 |
1979 | Apr 28 | Sep 30 | 61 | 450 | 1,741 | 197,765 |
1980 | May 3 | Sep 28 | 56 | 450 | 1,974 | 211,154 |
1981 | May 2 | Oct 4 | 59 | 395 | 1,814 | 209,826 |
1982 | May 1 | Oct 3 | 61 | 389 | 1,755 | 224,773 |
1983 | Apr 30 | Oct 2 | 61 | 410 | 1,655 | 208,568 |
1984 | Apr 28 | Sep 30 | 61 | 416 | 1,460 | 193,997 |
1985 | Apr 27 | Sep 29 | 61 | 412 | 1,435 | 184,840 |
1986 | Apr 26 | Sep 28 | 60 | 388 | 1,234 | 156,779 |
1987 | May 2 | Sep 20 | 56 | 326 | 1,041 | 118,959 |