Grokstar has seen concerts during 17 years.

Year   Concerts Seen  
2023 3 concerts
2018 1 concert
2017 1 concert
2016 1 concert
2013 1 concert
2009 1 concert
2002 1 concert
2001 1 concert
2000 1 concert
1998 1 concert
1996 1 concert
1995 3 concerts
1994 4 concerts
1993 6 concerts
1992 6 concerts
1991 5 concerts
1990 4 concerts