Year	2000 = 100
1980	1.248301708
1981	1.02917871
1982	1.053615881
1983	1.214135262
1984	1.361834247
1985	1.516226099
1986	2.223855419
1987	3.829705751
1988	4.506086497
1989	3.694407718
1990	5.692082539
1991	3.405474656
1992	4.583774813
1993	5.171607291
1994	5.652937475
1995	11.62078396
1996	21.12579763
1997	45.16800365
1998	40.01823154
1999	64.6308113
2000	100
2001	158.1586144
2002	192.9808569
2003	255.3327256
2004	419.2199635
2005	643.9380128
2006	748.1312671
2007	930.7201459
2008	1387.218323
2009	829.5350957
2010	911.5770283
2011	1230.628988
2012	1412.944394
2013	1340.018232
2014	1166.818596
2015	592.5250684
2016	446.6727438
2017	474.0200547
2018	556.0619872