Year	2015 = 100
1980	3.4621045706
1981	2.7928836597
1982	4.7256090353
1983	3.9952595629
1984	3.808557298
1985	3.6869721174
1986	3.6785512202
1987	6.038233349
1988	6.8601955249
1989	6.3477907093
1990	3.8270327219
1991	3.6642554215
1992	2.7826750171
1993	3.5875611443
1994	3.8906826223
1995	6.3462310562
1996	14.6997838683
1997	8.7802672175
1998	6.4476369877
1999	8.0111158482
2000	4.4077170831
2001	6.4646517233
2002	6.3982989906
2003	7.8770169799
2004	9.1849714805
2005	12.3566414669
2006	19.0797465486
2007	37.2412661025
2008	33.5521870077
2009	42.1540127754
2010	41.4175353853
2011	66.4714542545
2012	69.6566602387
2013	79.3542918385
2014	95.7266675111
2015	100
2016	106.8312026903
2017	43.2269079862
2018	33.0399534055
2019	21.255888607
2020	18.089154867
2021	21.8205692998