Robert Gross has seen concerts during 30 years.

Year   Concerts Seen  
2023 1 concert
2022 1 concert
2021 4 concerts
2020 1 concert
2019 3 concerts
2018 15 concerts
2017 10 concerts
2016 16 concerts
2015 18 concerts
2014 8 concerts
2013 13 concerts
2012 4 concerts
2011 7 concerts
2010 12 concerts
2009 5 concerts
2008 6 concerts
2007 9 concerts
2006 18 concerts
2005 30 concerts
2004 2 concerts
2003 15 concerts
2002 10 concerts
2001 5 concerts
2000 10 concerts
1999 8 concerts
1998 3 concerts
1997 9 concerts
1996 2 concerts
1995 2 concerts
1994 3 concerts