Year annual % growth 2009 4.933250539686512 2010 5.379578431582303 2011 2.7648160020519583 2012 7.270955352067901 2013 7.995780130016243 2014 9.625427955053837 2015 6.378804895461627 2016 6.605459117091385 2017 5.582720350073345 2018 6.996206708460733 2019 5.108819676227114 2020 1.4866760102635936 2021 2.301304914446959