Doctor Dan has seen concerts during 24 years.

Year   Concerts Seen  
2022 1 concert
2021 2 concerts
2019 7 concerts
2018 3 concerts
2017 2 concerts
2016 8 concerts
2014 3 concerts
2009 1 concert
2007 1 concert
2003 1 concert
2002 1 concert
1997 1 concert
1996 1 concert
1994 2 concerts
1988 2 concerts
1987 1 concert
1986 1 concert
1984 3 concerts
1983 2 concerts
1982 1 concert
1981 1 concert
1980 2 concerts
1978 1 concert
1977 3 concerts