Year	%
1976	4.3766513998473515
1977	3.7258685576580164
1978	4.892722059259552
1979	14.734988070187509
1980	17.205149289155496
1981	13.326056182264379
1982	7.651881502783628
1983	16.191036897561904
1984	6.2076254167506315
1985	9.525710359797234
1986	10.118654381233975
1987	15.327035602162193
1988	11.472464636726647
1989	12.567175388453723
1990	15.99171428579763
1991	15.097239324093863
1992	21.317157577816797
1993	27.33001886537262
1994	50.28729650082313
1995	29.969980343342932
1996	29.564753696225186
1997	38.689595577662885
1998	46.53491723504296
1999	33.00953031486552
2000	63.46771857108237
2001	72.84642149335615
2002	57.73466165245021
2003	47.76066753176927
2004	50.75034492541367
2005	53.01230450021457
2006	51.985753121688795
2007	47.84614624140632
2008	93.25494333156632
2009	53.48088817668794
2010	47.33577404048563
2011	49.86264295491125
2012	44.20079820273991
2013	43.93152791342655
2014	44.81117080985523
2015	45.50521878047009
2016	43.66241711365727
2017	38.24646870002844
2018	47.808493309759456
2019	35.579650734819815
2020	44.623948077893225
2021	43.35938943028968
2022	36.43367963991733