Year	2015 = 100
1980	22.4199715374
1981	26.0833968191
1982	21.4292954015
1983	17.6328878625
1984	21.725436949
1985	18.1004463414
1986	18.1002966269
1987	18.0397345651
1988	22.4293608468
1989	22.6318704477
1990	20.7577885648
1991	21.6183221425
1992	22.0763697842
1993	23.5792986821
1994	27.5560466241
1995	34.1653166857
1996	36.597660959
1997	40.3897202838
1998	38.3231298436
1999	35.3434719844
2000	38.5276413137
2001	38.9481804588
2002	40.9676871084
2003	44.8700790413
2004	51.1488195974
2005	56.7119853467
2006	69.4276436167
2007	73.4595881725
2008	78.965895946
2009	62.8094552383
2010	71.4193592769
2011	84.2711423304
2012	91.3407721815
2013	93.2880480953
2014	94.9568609737
2015	100
2016	95.3844860841
2017	96.5555093923
2018	101.9746444476
2019	102.2355548675
2020	88.2995196504
2021	95.038582339