Year Per 100 People 1990-01-01 0.0000000000000 1996-01-01 0.0028459396126 1997-01-01 0.0055844332805 1998-01-01 0.0109565326960 1999-01-01 0.0538044595290 2000-01-01 0.2118060703600 2001-01-01 0.2611500630900 2002-01-01 1.0839431374000 2003-01-01 1.5324965902000 2004-01-01 2.1755243393000 2005-01-01 2.5802454842000 2006-01-01 2.9797081872000 2007-01-01 3.4454312597000 2008-01-01 3.5800000000000 2009-01-01 3.7200000000000 2010-01-01 3.8600000000000 2011-01-01 4.2248000000000