Year	2010 = 100
1974	2.56868008373897
1975	2.65601520656041
1976	2.87309007931014
1977	3.47595929496581
1978	4.02417984184209
1979	4.40723425932538
1980	5.89576296218903
1981	6.89669196815479
1982	7.27685662054601
1983	9.09548211982678
1984	11.4218500490019
1985	9.68627853908247
1986	9.40008476644062
1987	10.6583098941276
1988	12.5520692858641
1989	13.6893523929395
1990	16.7248900818981
1991	18.2592483185848
1992	19.8561111039759
1993	21.3656387665198
1994	22.4344237380289
1995	24.4108090057924
1996	29.4122431855058
1997	31.4487783785635
1998	33.4063266590463
1999	33.2721131246709
2000	33.8348681196834
2001	37.7902073352941
2002	41.8435845074342
2003	43.1240715291781
2004	48.5086671547159
2005	54.0936198267853
2006	60.403518235488
2007	75.1188228595403
2008	93.8506869078657
2009	89.9350552052161
2010	100
2011	110.620138768444
2012	114.494259154053
2013	125.041463735329
2014	129.001447635929
2015	130.302298970766
2016	135.728673825084
2017	145.763750192312
2018	150.703941195071