Year	2015 = 100
1980	9.4077482087
1981	10.3624927892
1982	12.5870447842
1983	12.7117662299
1984	13.7747958914
1985	14.010127756
1986	16.3671857565
1987	14.1271859335
1988	14.4213203976
1989	12.2642229347
1990	10.2847915488
1991	21.2244847022
1992	19.0127025898
1993	23.561466197
1994	8.0356314978
1995	14.8293845476
1996	15.2522997916
1997	18.736406123
1998	20.2498370761
1999	17.545528639
2000	13.1685485102
2001	17.8738834727
2002	16.0023850949
2003	15.316950978
2004	15.2092708614
2005	21.6456979508
2006	26.307146039
2007	34.1320414038
2008	46.520237413
2009	55.5287490846
2010	57.9019609436
2011	71.1748942859
2012	82.0709576783
2013	84.2640853171
2014	91.7680882671
2015	100
2016	97.1497569577
2017	92.3437783212
2018	96.9294333274
2019	106.3120570754
2020	97.3653886079
2021	97.9094564076