Year	Per 100 People
1990-01-01	0.00000000000
1998-01-01	0.29584704708
1999-01-01	0.36320316132
2000-01-01	4.63851681640
2001-01-01	6.31091788790
2002-01-01	7.58066516890
2003-01-01	10.16184430700
2004-01-01	13.32285268900
2005-01-01	13.75948421600
2006-01-01	14.18201977700
2007-01-01	14.59048319900
2008-01-01	15.48000000000
2009-01-01	16.41000000000
2010-01-01	18.75000000000
2011-01-01	20.16120000000