Check out the number of rigs at the WBCCI international rally in Louisville, KY in 1976.
Past WBCCI International Rallies and Attendance
1958 1. Bull Shoals, AR (300)
1959 2. Wisconsin Dells, WI (515)
1960 3. Colorado Springs, CO (868)
1961 4. Hershey, PA (960)
1962 5. Auburn, WA (1717)
1963 6. Bemidji, MN (1882)
1964 7. Princeton, NJ (1969)
1965 8. Laramie, WY (2592)
1966 9. Cadillac, MI (2828)
1967 10. Santa Rosa, CA (2156)
1968 11. Grand Island, NE (2211)
1969 12. Laramie, WY (2175)
1970 13. Hershey, PA (3402)
1971 14. Salem, OR (2869)
1972 15. Louisville, KY (3652)
1973 16. Bozeman, MT (3909)
1974 17. Notre Dame, IN (3943)
1975 18. Brandon, Man., CAN (4209)
1976 19. Louisville, KY (4493)
1977 20. Bozeman, MT (3949)
1978 21. Ames, IA (3993)
1979 22. Las Cruces, NM (2138)
1980 23. Notre Dame, IN (3346)
1981 24. Ames, IA (2020)
1982 25. Bozeman, MT (3423)
1983 26. Duluth, MN (3753)
1984 27. Notre Dame, IN (3396)
1985 28. Lake Placid, NY (3965)
1986 29. Boise, ID (3644)
1987 30. Rapid City, SD (2813)
1988 31. Huntsville, AL (2741)
1989 32. Bozeman, MT (3461)
1990 33. Notre Dame, IN (3350)
1991 34. Duluth, MN (2481)
1992 35. Dayton, OH (2721)
1993 36. Bismarck, ND (2531)
1994 37. Brandon, Manitoba, Canada (2263)
1995 38. Amherst, MA (2594)
1996 39. Rapid City, SD (2150)
1997 40. Huntsville, AL (1509)
1998 41. Boise, ID (1902)
1999 42. Dayton, OH (1989)
2000 43. Bismarck, ND (1310)
2001 44. Sioux Falls, SD (1143)
2002 45. Rapid City, SD (936)
2003 46. Burlington, VT (1669)
2004 47. Lansing, MI (1197)
2005 48. Springfield, MO (1154)
2006 49. Salem, OR (1049)
2007 50. Perry, GA (1017)
2008 51. Bozeman, MT (871)
2009 52. Madison, WI (903)
2010 53. Gillette, WY (709)
2011 54. Du Quoin, IL (539)
2012 55. Sedalia, MO (459)
2013 56. Hurron, SD (386)
2014 57. Gillette, WY (346)
2015 58. Farmington, NM (427)
2016 59. Lewisburg, WV (660)