Year	%
1988	62.53141
1989	63.88462
1990	64.88083
1992	74.74312
1995	33.98422
1996	50.0792
1997	50.13803
1998	50.13803
1999	59.26144
2000	59.08249
2001	57.30345
2002	52.60007
2003	55.78626
2005	33.36419
2006	33.85267
2008	34.18708
2009	34.11309
2010	35.79029
2011	36.19925
2013	37.98988
2014	42.73397
2015	34.2073
2016	36.36196
2020	43.05173
2021	42.90914