Year Number 2000 64.5502624511719 2002 29.6296291351318 2003 36.6834182739258 2004 39.8058242797852 2005 25.7281551361084 2006 14.0096616744995 2007 15.4589376449585 2008 19.7115383148193 2009 26.5402851104736 2010 29.8578205108643 2011 31.7535552978516 2012 37.4407577514648 2013 35.5450248718262 2014 38.0952377319336 2015 36.1904754638672 2016 46.1904754638672 2017 49.0476188659668 2018 54.2452812194824 2019 56.1320762634277 2020 53.301887512207 2021 51.886791229248 2022 53.7735862731934