Mary Mc Kovich has seen concerts during 11 years.

Year   Concerts Seen  
1977 6 concerts
1976 1 concert
1975 2 concerts
1974 2 concerts
1973 3 concerts
1971 2 concerts
1970 5 concerts
1969 10 concerts
1968 9 concerts
1967 2 concerts
1964 1 concert