Year	% of total
1960	83.33333333333334
1961	83.33333333333334
1962	80
1963	75
1964	75
1965	71.42857142857143
1966	100
1967	100
1968	87.50000000000001
1969	80
1970	80
1971	89.99999999999999
1972	92.85714285714285
1973	88.23529411764707
1974	100
1975	100
1976	100
1977	100
1978	96.49122807017544
1979	100
1980	100
1981	100
1982	100
1983	100
1984	100
1985	100
1986	100
1987	100
1988	100
1989	100
1990	95.342
1991	99.009
1992	96.67545454545456
1993	100.00909090909092
1994	103.34272727272729
1995	100.84249999999999
1996	102.15214285714286
1997	97.78666666666666
1998	98.550625
1999	96.5
2000	98.34227272727273
2001	93.87519999999999
2002	98.22321428571428
2003	99.36387096774195
2004	97.06764705882352
2005	100.00909090909092
2006	94.6086
2007	110.01
2008	97.78666666666666
2009	102.81980392156862
2010	103.21925925925926
2011	108.08
2012	95.48037735849057
2013	97.78666666666666
2014	98.2756
2015	99.009
2016	98.67563636363637