John Servick has seen concerts during 12 years.

Year   Concerts Seen  
2019 1 concert
2010 1 concert
2001 1 concert
1994 1 concert
1988 1 concert
1981 1 concert
1978 1 concert
1976 1 concert
1975 2 concerts
1974 2 concerts
1973 1 concert
1972 1 concert