Year	% of output
1960	11.082251082251082
1961	10.446631339894019
1962	10.042735042735043
1963	9.001687816465587
1964	8.69710653955511
1965	8.604056943213225
1966	8.052129392599488
1967	7.343589743589743
1968	7.060121345835632
1969	6.580829756795422
1970	6.567080045095828
1971	6.417341342387046
1972	6.55626027719051
1973	6.045721088040706
1974	4.826074017016211
1975	5.215514872787681
1976	5.064971439391549
1977	5.020297674032012
1978	4.62303593583041
1979	4.474664297673147
1980	4.4346943658945985
1981	4.119074371505973
1982	4.291757241055167
1983	4.309626427427441
1984	3.7911958952932965
1985	4.288235391136547
1986	4.333009488842266
1987	4.277353364814849
1988	3.973079724915958
1989	4.019730749604692
1990	4.671786485009003
1991	4.743648514703123
1992	4.72393239502403
1993	4.6657760300584386
1994	4.562796558687836
1995	4.554533479626772
1996	4.366641251262184
1997	4.562151663570343
1998	4.5796067475272535
1999	4.441248268868282
2000	4.314800586715093
2001	4.23228181117397
2002	4.543576958620734
2003	4.605635626931118
2004	4.402212007474264
2005	4.266999597118735
2006	4.247144551890819
2007	4.224745208709939
2008	4.459505726384962
2009	4.523998730775603
2010	4.135645016420131
2011	4.359112540755571
2012	4.092626382695205
2013	4.484670595952112
2014	4.307817226526076