Year	Percent
1977	79.3238
1978	85.43307
1979	74.40945
1980	84.8883
1981	131.86667
1982	122.87671
1983	127.78561
1984	130.98386
1985	131.07089
1986	126.37037
1987	107.01262
1988	106.80908
1989	111.53359
1990	99.15357
1991	111.95266
1992	115.94878
1993	108.96708
1995	108.76068
1996	120.88935
1997	117.61762
1999	107.01914
2000	102.68577
2001	116.38618
2002	109.27562
2003	121.82469
2004	120.72398
2005	124.88849
2006	117.36931
2007	135.42345
2008	106.0966
2014	105.54529
2016	95.8368