Year	% of output
1960	18.244332223057913
1961	17.78906025481368
1962	15.834970530451868
1963	16.584932617677723
1964	14.929214929214929
1965	15.108435254066322
1966	14.59699036598636
1967	13.515044073472202
1968	12.811333522516428
1969	12.554769774771312
1970	12.610340479192939
1971	12.1571811317691
1972	11.954649193845247
1973	11.496167063177372
1974	10.141615465307957
1975	10.240200735706107
1976	9.537789231889741
1977	9.806988963091628
1978	9.729570242552498
1979	9.774314012014937
1980	9.124201197517074
1981	8.109385795847121
1982	9.310521029725301
1983	9.11178907590702
1984	9.37378287301238
1985	9.423883710007404
1986	9.33883395202296
1987	9.173038927348687
1988	9.74066270276511
1989	8.421195652173912
1990	9.282700421940929
1991	9.395214185552089
1992	9.472878111040204
1993	9.552300259265694
1994	9.418776646654486
1995	9.637310079953622
1996	8.996625616473914
1997	7.453462122053218
1998	9.539174319516837
1999	9.462827382832046
2000	8.72076443615591
2001	7.714948920267563
2002	8.022357732049
2003	8.754707302001842
2004	8.700461229269987
2005	8.96888873533832
2006	8.50017930726499
2007	8.441917711097638
2008	8.299622481333085
2009	8.375332769153285
2010	9.184768034325556
2011	8.927634264388594
2012	8.734716372617727
2013	9.484623994030805
2014	9.599234767175004