Year	%
1991	34.64922
1992	35.39318
1996	40.05213
1999	33.03439
2001	32.38305
2002	33.50002
2003	33.30743
2004	36.34039
2005	35.51476
2006	34.17024
2007	42.01911
2008	41.8508
2010	34.4568
2011	34.4568
2012	34.20491
2013	34.20491
2021	34.64437