Bob! has seen concerts during 19 years.

Year   Concerts Seen  
2023 1 concert
2022 3 concerts
2021 3 concerts
2018 2 concerts
2016 4 concerts
2013 2 concerts
2012 4 concerts
2011 2 concerts
2009 2 concerts
2008 2 concerts
1999 1 concert
1992 1 concert
1983 1 concert
1982 4 concerts
1981 1 concert
1980 4 concerts
1979 6 concerts
1978 7 concerts
1977 4 concerts