Year	% of output
1990	9.328904952622839
1991	9.438116932422172
1992	9.326353869765402
1993	14.228395061728394
1994	14.709876543209877
1995	14.99883977259543
1996	15.658787139249128
1997	15.14350553998131
1998	15.052369868810834
1999	15.785692906315473
2000	16.37668424135911
2001	16.786222601764873
2002	16.979463776383344
2003	16.24441554034949
2004	14.947195244918538
2005	14.665240993584472
2006	15.693100518077904
2007	15.767441860465118
2008	16.0272596454074
2009	15.830218192422919
2010	16.09705261470219
2011	15.369240479697034
2012	15.506897791048077
2013	14.023504219032809
2014	15.43682353644681