Year	2015 = 100
1980	27.2211463946
1981	20.4975772212
1982	26.5228057948
1983	26.9388757843
1984	28.2842563306
1985	35.7635925766
1986	46.729668484
1987	50.9613821252
1988	53.7135196357
1989	54.3656641156
1990	62.8462823407
1991	57.0247361
1992	63.5149154067
1993	62.6800550667
1994	68.5630960268
1995	71.2759871132
1996	78.0384820421
1997	69.606193898
1998	78.5998724095
1999	77.4731779649
2000	72.1527566387
2001	78.9179620942
2002	81.0146299289
2003	75.8312414067
2004	73.15498094
2005	79.8357993454
2006	87.6092354585
2007	78.9707346204
2008	78.6729070172
2009	72.1876134189
2010	83.7720216247
2011	85.3335028086
2012	86.3149780696
2013	91.4463116248
2014	102.6901481406
2015	100
2016	88.7987582147
2017	84.9172163247
2018	85.1147746851
2019	81.7286488465
2020	63.4060415075
2021	67.20984684