Year	% of total
1990	7.340076544559869
1991	0
1992	0
1993	0
1994	0.8482563619227144
1995	0.81799591002045
1996	0.4904632152588556
1997	0.41072447233314313
1998	0.4627079431530241
1999	0.4136300965136892
2000	0.4602550580113146
2001	0.8648242150780222
2002	1.2610106629578117
2003	1.2160482868808804
2004	1.03708359522313
2005	1.1188700206316458
2006	1.194680291532046
2007	1.3238289205702647
2008	0
2009	0.2106203727342354
2010	0.2803083391730904
2011	0.24869109947643978
2012	0.19883539269990058
2013	0.24067388688327318
2014	0.27227722772277224
2015	0.3135197389468296