Year	2000 = 100
1980	38.82842394
1981	31.07047606
1982	21.71516511
1983	28.11464442
1984	31.93399935
1985	31.10966323
1986	31.92971748
1987	34.09808826
1988	35.40988724
1989	33.26424974
1990	35.98410879
1991	36.36590982
1992	38.22267158
1993	45.49803396
1994	40.20392019
1995	52.79164548
1996	60.80255004
1997	73.78852674
1998	91.53811758
1999	98.67614453
2000	100
2001	89.09277035
2002	94.02087155
2003	106.0291691
2004	139.7705371
2005	171.1060515
2006	208.1258815
2007	271.0084188
2008	366.5524638
2009	224.8970833
2010	298.905815
2011	427.1418327
2012	436.5511979
2013	410.3893359
2014	405.7975921
2015	372.3794033
2016	343.0084251
2017	382.563784
2018	389.9181428