Year	%
1993	41.78134
1997	66.39337
1998	62.75789
2000	65.72031
2003	42.38295
2005	37.93729
2006	37.63311
2007	38.02369
2008	40.3438
2009	40.09103
2010	40.52941
2011	39.64091
2012	40.74485
2013	40.67357
2014	40.19527
2015	36.47715
2016	37.53234
2018	38.69867
2019	38.03868
2020	37.91717
2021	37.10457