Year per 100 people 2001 0.27742931 2002 2.859962889 2003 2.915033646 2004 5.762895386 2005 9.809066141 2006 13.89641284 2007 17.03598555 2008 20.90890364 2009 21.9512529 2010 22.87122659 2011 23.93528199 2012 24.61328511 2013 25.31497693 2014 26.78733655 2015 27.34568655 2016 28.19705075 2017 28.68005597 2018 29.09625419 2019 29.71926762 2020 30.7702297 2021 31.69169722 2022 32.21911612