Year	%
1976	9.67741935483871
1977	5.29529112304736
1978	8.9768401522664
1994	15.429896539422
1995	6.05302509359617
1996	9.670381409534231
1997	8.732117931551292
1998	7.038097413904325
1999	7.758965190430257
2000	16.103230923925928
2001	19.953753411647288
2002	14.105883862137489
2003	13.849958195877669
2004	25.547127888421343
2005	19.671263710749642
2006	14.750312300705797
2007	35.980481680308465
2008	82.09023086306597
2009	54.56107758574165
2010	31.088405381961902
2011	16.17304527840148
2012	16.276888175727706
2013	13.164039138484773
2014	20.56835933282039
2015	13.795056474823193
2016	18.146172119627593
2017	12.926594594407932
2018	17.7542041765548
2019	20.402149632730524
2020	12.007530190156874
2021	16.031817658782323
2022	14.616913634465018