Year	Percent
1977	79.98501
1978	95.28024
1979	109.04449
1981	126.76168
1982	108.60215
1984	114.22222
1985	95.41041
1986	101.2624
1990	119.84127
1991	94.53925
1993	117.84841
1998	108.69565
1999	110.831
2001	103.95529
2005	108.08333
2006	105.96138
2012	101.59262
2013	106.4623