Year	% of output
1960	9.592796834595134
1961	9.18839181867181
1962	8.976466961257836
1963	9.224415990616754
1964	9.256011189804845
1965	9.251318246168367
1966	8.889350924280802
1967	8.338556902075497
1968	8.338808146522025
1969	8.339971088886923
1970	8.808871851040525
1971	10.090923597270415
1972	10.122562737729448
1973	10.164966747540417
1974	10.173118381391712
1975	10.218558175125812
1976	10.42476430697982
1977	10.335001770135653
1978	10.497053537293297
1979	10.604881120007418
1980	10.848348405333317
1981	10.991373691787627
1982	11.121135032695362
1983	11.097422167866126
1984	11.155936169328257
1985	11.298160244929166
1986	11.169627625383685
1987	11.671282485697434
1988	11.463869085456889
1989	11.71110662869765
1990	10.323051110586125
1991	10.7881353957179
1992	11.038944504390773
1993	11.597493457206264
1994	11.79126808202325
1995	12.159851268326044
1996	12.556164867478971
1997	12.661814492963734
1998	13.088853995285064
1999	13.519465689234092
2000	13.664574755217224
2001	13.753722488483552
2002	13.463577336691602
2003	12.938455995743007
2004	12.649154487933256
2005	12.509527965413126
2006	11.949888414960448
2007	11.497142494613563
2008	11.32585178449431
2009	11.277857235675484
2010	10.663247171987566
2011	10.255762599407108
2012	10.279414590639057
2013	10.182449158643708
2014	10.267344612423479