Year	%
2001	2.858419
2002	24.8505
2004	27.04232
2005	26.89724
2006	22.92798
2007	24.81177
2008	35.96542
2009	37.73281
2010	23.19063
2011	36.68159
2012	21.26992
2013	14.88639
2014	16.25402
2015	18.47028
2016	17.67159
2017	12.15178
2018	6.479156
2019	18.58064
2020	19.39435
2021	20.83637