Year	2015 = 100
1980	38.7394191368
1981	31.9211531413
1982	28.0247721813
1983	29.4624742471
1984	28.742821816
1985	27.2073496012
1986	30.2486424306
1987	23.6788087961
1988	24.3928514611
1989	19.9346928232
1990	23.3005505019
1991	23.5610037773
1992	23.9416662502
1993	29.3185838306
1994	33.814848786
1995	29.987033799
1996	32.4738519791
1997	43.8551293372
1998	44.5085998051
1999	45.561413342
2000	53.3849070257
2001	51.9872062974
2002	54.383264685
2003	56.7793230778
2004	59.9851402898
2005	62.0433907357
2006	67.2711545213
2007	72.8710334239
2008	84.2450499755
2009	70.1790980991
2010	81.6729175891
2011	96.3560360398
2012	96.9151163119
2013	99.6742138536
2014	96.2331472937
2015	100
2016	98.3863324935
2017	104.5554567416
2018	107.1943883276
2019	107.1869460445
2020	91.2738509738
2021	120.3247883398