Year	%
1993	89.51407
1997	32.43123
2001	36.6082
2002	36.04026
2003	34.37764
2004	36.26013
2005	32.71856
2006	35.18438
2007	32.44614
2008	52.35143
2009	53.37608
2010	25.59954
2011	50.63055
2012	23.82724
2013	48.86254
2015	23.50026
2016	24.8311
2018	23.60768
2020	24.19937
2021	24.17138