Year	%
1993	56.73497
1998	50.15618
1999	20.58712
2000	18.55528
2002	18.44888
2003	19.35049
2004	21.48468
2005	21.65096
2006	19.45306
2007	45.03713
2008	22.3663
2009	45.41185
2010	45.86365
2011	48.90406
2012	22.64935
2013	40.18724
2014	48.15847
2015	48.41149
2016	48.11775
2018	19.94126
2019	19.22991
2020	20.06978
2021	26.35334