Year	% of output
1960	9.911190053285967
1961	9.39887080704085
1962	9.241573033707866
1963	10.595028872709014
1964	10.267355650415636
1965	10.054512416717142
1966	10.502612141956403
1967	10.964417968121074
1968	11.490772779700114
1969	10.691502934422047
1970	10.054505392554795
1971	10.533461398185578
1972	10.487937171788696
1973	10.501527067694408
1974	10.454893685552463
1975	10.47025797093977
1976	10.617790921820157
1977	10.590455379490642
1978	10.836909303519178
1979	10.958281055476565
1980	11.138591669194858
1981	11.452155602273718
1982	11.422455170295281
1983	11.392696641900589
1984	11.446327120226254
1985	11.548973929617123
1986	11.372509832619585
1987	11.841511980950125
1988	11.643917953330853
1989	11.952498577918384
1990	10.284948724543742
1991	10.644201922192991
1992	10.917413928972703
1993	11.467108134400593
1994	11.660818146406378
1995	12.007660499147306
1996	12.451498993546153
1997	12.597362458408735
1998	13.030890480868573
1999	13.521374689510628
2000	13.645787419905966
2001	13.722772187512742
2002	13.43439065062627
2003	12.916636738720449
2004	12.566893785355829
2005	12.414113170340928
2006	11.859338880773308
2007	11.37210259665835
2008	11.212488185422268
2009	11.133213563594667
2010	10.632661593175582
2011	10.225915715258687
2012	10.254921768591567
2013	10.154571830166127
2014	10.083114395865294