Year	%
2001	3.251462
2004	23.35329
2005	24.80119
2006	22.7578
2007	21.51015
2008	38.92958
2009	39.41748
2010	22.26162
2011	33.68493
2012	20.91533
2013	13.67215
2014	16.6609
2015	16.53127
2016	14.9536
2017	11.90172
2018	17.60063
2019	17.86968
2020	18.50714
2021	20.18223