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	16.37202884492303
2001	19.707842914949577
2002	13.84001422146939
2003	13.74989697551233
2004	25.42737508958146
2005	20.115505614785427
2006	15.263477949182672
2007	35.983483706621634
2008	81.79097168768406
2009	54.15042238376124
2010	30.904128345287326
2011	16.123628077666297
2012	16.18514860527942
2013	13.115346328831402
2014	20.48806331113321
2015	13.738827064875426
2016	18.077554601172693
2017	12.912999898549867
2018	17.646360251964833
2019	20.287553756321202
2020	11.986485694985015
2021	16.016548631355146
2022	14.60337593386681