Year	% of output
1990	7.344303577049553
1991	8.053377958609099
1992	8.912201714509923
1993	9.61394466017727
1994	10.579489228613854
1995	9.573266054761868
1996	13.521350220204065
1997	15.836266912599958
1998	17.241638960647798
1999	17.438235704648026
2000	18.079162019980267
2001	19.709727261679486
2002	19.29573894406932
2003	17.80109651069875
2004	15.004120199967039
2005	13.337959152937126
2006	12.362277664788106
2007	11.695227030690289
2008	11.611955178465724
2009	11.918050443787834
2010	11.489291842311522
2011	10.905985185793135
2012	10.798888905693097
2013	10.693525239280147
2014	10.77895315290562