Nickman has seen concerts during 19 years.

Year   Concerts Seen  
2023 3 concerts
2022 3 concerts
2019 6 concerts
2018 7 concerts
2017 1 concert
2016 1 concert
2015 2 concerts
2014 5 concerts
2013 6 concerts
2012 2 concerts
2011 5 concerts
2010 4 concerts
2009 5 concerts
2008 5 concerts
2007 12 concerts
2006 3 concerts
2005 11 concerts
2004 3 concerts
2000 1 concert