Year per 1,000 people 2001 4.618 2006 4.171 2007 4.321 2008 4.685 2009 4.848 2010 6.637 2011 6.551 2012 6.334 2013 6.001 2014 6.536 2015 7.018 2016 6.93 2017 7.226 2018 7.106 2020 4.587