Year	%
1989	94.41677
1991	94.73088
1993	95.24398
1995	58.25681
1999	91.40034
2000	47.31746
2001	51.23816
2003	48.55106
2004	23.81512
2005	20.86077
2006	21.70238
2007	16.78742
2008	17.48954
2009	17.96119
2010	17.36091
2011	18.39503
2013	23.04205
2014	16.75183
2015	14.94591
2021	18.10756