Year Number of Participants
1947 11
1948 26
1949 24
1950 37
1951 45
1952 (through downtown Indianapolis) 40
1953 (through downtown Indianapolis) 60
1954 64
1955 83
1956 71
1957 85
1958 73
1959 75
1960 84
1961 91
1962 94
1963 87
1964 88
1965 86
1966 75
1967 69
1968 66
1969 66
1970 59
1971 60
1972 65
1973 54
1974 48
1975 46
1976 45
1977 43
1978 34
1979 32
1980 34
1981 27
1982 27
1983 27
1984 34
1985 31
1986 39
1987 31
1988 25
1989 26
1990 28
1991 30
1992 30
1993 26
1994 27
1995 26
1996 30
1997 31
1998 27
1999 32
2000 27
2001 30
2002 34
2003 34
2004 36
2005 41
2006 44
2007 48
2008 44
2009 44
2010 49
2011 45
2012 46
2013 44
2014 40
2015 40
2016 49
2017 49
2018 43
2019 40
2021 33
2022 39
2023 37
2024 37