Just because I was curious

[leashpj33]

How many times has Elysia seen Pearl Jam in concert?

1998-08-18 East Lansing Michigan Breslin Center
1998-08-23 Auburn Hills Michigan The Palace of Auburn Hills
2000-10-07 Auburn Hills Michigan The Palace of Auburn Hills
2003-04-25 Cleveland Ohio Gund Arena
2003-05-28 Missoula Montana Adams Field House
2003-06-26 Clarkston Michigan DTE Energy Music Theatre
2003-06-25 Clarkston Michigan DTE Energy Music Theatre
2004-09-24 Seattle Washington The Showbox
2004-10-03 Grand Rapids Michigan Delta Plex
2005-09-01 George Washington Gorge Amphitheatre
2006-22-07 George Washington The Gorge
2006-23-07 George Washington The Gorge

The answer is 12*.