Year	% of total
1971	100
1974	99.9999187645716
1975	100
1978	100
1980	100
1982	99.99999999999997
1983	100
1984	100
1991	99.99998615310184
1992	99.99998675743124
1993	99.99998723751233
1995	99.99999999999999
1997	99.99999017153422
1998	100
1999	99.99999116442146
2000	99.99999084274911
2001	99.99999171340787
2004	100
2005	100
2007	100
2008	99.99999560350818
2009	100
2013	100
2014	99.99502672105118