Year per 100 people 2000 0.863865375 2001 2.228993309 2002 3.770362381 2003 6.004760741 2004 9.50896894 2005 13.92291335 2006 18.37497161 2007 21.44218268 2008 22.97925669 2009 23.22967252 2010 23.70028907 2011 24.1086299 2012 24.81201717 2013 25.58184214 2014 26.7306887 2015 27.62162347 2016 28.39674607 2017 29.12580311 2018 29.65586314 2019 30.13627624 2020 30.75635496 2021 29.94973835 2022 29.99620236