Year	%
1991	38.9951
1992	40.28799
1996	42.82953
1999	35.83505
2001	35.32428
2002	36.33382
2003	36.58626
2004	38.75687
2005	38.15722
2006	36.02538
2007	43.99256
2008	43.69133
2010	37.07569
2011	37.07569
2012	36.22198
2013	36.22198
2021	38.45121