Year	% of total
1992	0
1993	0
1994	0
1995	0
1996	0
1997	0
1998	0.40826923076923083
1999	0.842527352297593
2000	1.4135827664399092
2001	1.835539488320356
2002	2.0444721233689203
2003	1.6324321389793703
2004	1.5210650224215245
2005	1.5279166666666666
2006	1.643692636072572
2007	1.9811518858307848
2008	2.3349373695198334
2009	1.6370535714285717
2010	2.520274914089347
2011	2.624719917012448
2012	2.851664841182914
2013	3.6046966019417472
2014	3.2522236503856043
2015	3.0885160427807485
2016	4.912489851150203