Year	Percent
1977	83.78756
1978	90.53867
1979	113.73626
1981	132.21976
1982	126.25871
1984	119.2147
1985	96.61157
1986	102.53165
1990	135.13515
1991	99.37008
1993	104.94465
1998	107.6222
1999	104.36933
2001	106.98587
2005	108.03089
2006	101.32399
2012	99.77204
2013	115.06747