Year	2015 = 100
1980	24.1596336565
1981	23.6055809052
1982	19.5767471129
1983	20.2483611099
1984	21.0394466398
1985	24.5071863322
1986	48.3533777862
1987	43.74195485
1988	29.7307614327
1989	25.0011508894
1990	31.6608096298
1991	29.2773475006
1992	20.2787248395
1993	21.2614546385
1994	26.5783229739
1995	27.8636822961
1996	28.7443317848
1997	34.0322612978
1998	39.8422663338
1999	34.4922695209
2000	43.0977723178
2001	55.4781421733
2002	55.5426696664
2003	60.0964998858
2004	60.0586449144
2005	59.3317080224
2006	61.9359834887
2007	83.9885757235
2008	87.6489947686
2009	75.2105285989
2010	79.3960805101
2011	91.7782155641
2012	88.5313443825
2013	92.7328878514
2014	108.2303333962
2015	100
2016	89.7926222383
2017	79.326237036
2018	86.6748509509
2019	98.0916393475
2020	84.0179567679
2021	81.9471408296