I know I already answered with a guess at 75 hrs...But Im bored and decide to think it over a little more.......

last several years going off recollection.....

2001 one opportunity, killed a mature 8pt

2002one opportunity, killed a mature 9pt

2003 no opportunities

2004 no opportunities

2005 no opportunities

2006 one opportunity, killed mature 8pt

2007 no opportunities yet.