Year	%
1988	25.93
1989	27.83
1990	28.02
1992	28.13
1995	87.19
1996	22.95
1997	23
1998	23
1999	24.64
2000	24.69
2001	24.23
2002	25.17
2003	24.61
2005	10.55
2006	10.59
2008	10.82
2009	9.94
2010	11.06
2011	11.16
2013	11.35
2014	11.76
2015	11.27
2016	11.48
2020	12.75
2021	12.7