Year	2000 = 100
1980	24.29954007
1981	41.79384792
1982	66.29376576
1983	78.91456351
1984	84.65334865
1985	90.97269019
1986	98.9505204
1987	89.60159792
1988	91.69773698
1989	91.09532711
1990	97.42104233
1991	83.46864515
1992	78.67748777
1993	67.84147387
1994	52.50872776
1995	95.03971948
1996	77.98532734
1997	87.48935569
1998	95.00659944
1999	87.93612002
2000	100
2001	215.5747911
2002	518.9653573
2003	235.1590106
2004	263.1969712
2005	249.3470962
2006	337.5500654
2007	410.5343968
2008	414.5559897
2009	434.6521274
2010	496.8846663
2011	597.0992629
2012	518.0523564
2013	560.2344822
2014	826.2174199
2015	761.0204217
2016	528.2214552
2017	557.2030046
2018	589.5882648