Year	%
2009	3.46095790428879
2010	3.34951747323682
2011	2.52887904557003
2012	2.20068041783046
2013	2.44086452225224
2014	2.02468665436274
2015	1.8854782076355
2016	1.71584803855675
2017	1.5793111524775
2018	1.67363606149179
2019	1.97428417462379
2020	3.53246213156459
2021	3.95540769439997