Year	2000 = 100
1981	94.59459
1982	86.95652
1983	91.42857
1984	90
1985	102.89855
1986	100
1987	89.02439
1988	80
1989	75.2809
1990	68.75
1991	82.75862
1992	104.30108
1993	106.81818
1994	110.34483
1995	100
1996	102.08333
1997	103.125
1998	103.09278
1999	106.31579
2000	100
2001	115.78363
2002	113.26513
2003	110.67304
2004	103.08299
2005	273.45786
2006	267.73738
2007	263.84467
2008	253.70228
2009	269.96214
2010	258.87208
2011	270.38791
2012	271.45134
2013	270.08304
2014	283.18874
2015	268.30123
2016	257.75871