Year	%
2001	36.74033
2002	36.39741
2003	37.57835
2005	37.26706
2006	35.03268
2007	36.65998
2008	33.67561
2009	27.74287
2010	26.99001
2011	34.09704
2012	26.98598
2014	24.76691
2016	23.1749
2018	28.99753
2020	28.97724
2021	28.36762