Year	%
1989	42.35
1991	40.99
1993	48.81
1995	31.62
1999	39.34
2000	24.65
2001	16.23
2003	16.66
2004	12.09
2005	13.25
2006	13.6
2007	14.18
2008	14.31
2009	14.73
2010	14.03
2011	14.69
2013	18.61
2014	12.5
2015	12.21
2021	13.17