Year	% of output
1960	11.805054151624548
1961	13.167795334838225
1962	12.465598186822081
1963	11.906354515050168
1964	12.512768130745657
1965	12.35115277425893
1966	10.543227231649764
1967	11.240386511536187
1968	10.04481532993355
1969	8.242382901318782
1970	7.840591290451458
1971	7.946735395189003
1972	7.776805677068143
1973	8.786610878661087
1974	10.069387532098563
1975	10.33180026281209
1976	10.215027548880979
1977	10.610043509789703
1978	10.16260162601626
1979	8.972909411605084
1980	7.364094900056044
1981	9.062389313363356
1982	7.620332125094833
1983	9.675819468866946
1984	9.27134791813691
1985	7.685973099094154
1986	6.805704447259851
1987	7.446844586116858
1988	7.9551122194513715
1989	10.225439323245977
1990	9.498883842660304
1991	6.9147626214256395
1992	7.267876895048474
1993	7.167245540707599
1994	4.169747153630046
1995	6.371402143751021
1996	5.970288529730134
1997	4.838090939862349
1998	5.577311312723469
1999	5.061664953751285
2000	5.835852772307437
2001	6.294892522992923
2002	5.322371267849416
2003	4.436409301519941
2004	4.476209318429122
2005	4.2128786624731
2006	3.437767205279428
2007	4.9521823176314985
2008	5.940026218046755
2009	6.500288596322458
2010	6.752097164325048
2011	6.247693661472082
2012	7.003029217289339
2013	5.55795412025444
2014	6.133482475764355