Year Percent 2000 0 2001 0 2002 0 2003 0 2004 0.6356 2005 1.50769 2006 2.38496 2007 3.26742 2008 4.15506 2009 5.04788 2010 5.94589 2011 6.84908 2012 7.75745 2013 8.67101 2014 9.58976 2015 10.51368 2016 11.44279 2017 12.37709 2018 13.31656 2019 14.26123 2020 15.21107 2021 16.1661 2022 16.1661