Year	% of output
1960	12.532052776353208
1961	11.475409836065573
1962	11.93123956169294
1963	11.56795442927043
1964	11.283113126930914
1965	10.654194435312753
1966	10.45141205247943
1967	9.983814197261259
1968	10.799291221684786
1969	10.472076654899467
1970	9.048014418501044
1971	8.986709397681214
1972	8.486407714588994
1973	12.727639688873019
1974	10.317084033734178
1975	10.28690251294527
1976	10.533825531469263
1977	10.2864693830543
1978	10.027507751124787
1979	10.008494864468299
1980	9.624713862696096
1981	10.952175954915466
1982	8.025820539587983
1983	8.014822256129344
1984	7.327091404792653
1985	8.804947350827344
1986	7.42019876529424
1987	7.810801152650107
1988	7.230248600806977
1989	7.548170408343645
1990	6.1580042388535645
1991	6.0823069453672
1992	6.25730553146563
1993	6.074640397951432
1994	6.051361197351183
1995	6.141604698938109
1996	6.1012551121139476
1997	5.967173971379909
1998	6.3127182479655835
1999	6.893486620143695
2000	7.137956009606221
2001	8.093550041245848
2002	6.6242116651567
2003	6.580200012693462
2004	7.599479433686951
2005	6.723101245034968
2006	6.745671967584337
2007	6.016157774951745
2008	6.093231251517034
2009	5.911445212519398
2010	6.477314556443474
2011	6.515771522644117
2012	5.798700160886949
2013	5.340095584906718
2014	4.779589469274643