Year	2000 = 100
1980	337
1981	231
1982	209
1983	159
1984	107
1985	81
1986	72
1987	79
1988	88
1989	86
1990	83
1991	85
1992	80
1993	80
1994	81
1995	81
1996	86
1997	89
1998	97
1999	107
2000	100
2001	82.957
2002	76.97248202
2003	78.59429222
2004	74.41228993
2005	83.21749619
2006	86.99723487
2007	88.65018233
2008	89.89128489
2009	86.47541606
2010	89.67500646
2011	95.68323189
2012	95.1091325
2013	92.70857799
2014	98.74576059
2015	89.38071266
2016	87.33300053
2017	90.49532848
2018	92.46269692