Year	%
1995	6.679498
1996	7.486313
1997	7.402163
1998	6.694723
2000	6.022314
2001	5.012681
2002	4.032381
2003	3.336245
2004	1.928808
2005	35.81931
2006	43.64688
2007	38.74268
2008	38.94086
2009	37.39616
2010	36.58258
2011	37.31083
2012	36.95271
2013	36.63703
2014	35.22309
2015	37.91584
2016	27.37977
2017	23.58014
2018	26.06938
2019	26.1963
2020	26.17267
2021	26.46807