Year	Percent
1993	0.81401
1994	19.92059
1995	8.483
1996	11.88793
1997	12.59623
1998	13.16254
1999	38.27547
2000	30.38744
2001	38.46387
2002	32.71788
2003	30.00663
2004	22.07368
2005	18.30838
2006	13.67386
2007	10.20992
2008	7.32657
2009	8.02482
2010	8.44182
2011	6.80809
2012	5.23975
2013	6.3128
2014	6.15649
2015	7.00398
2016	4.85216
2017	4.10921
2018	4.15386
2019	3.23621
2020	7.63584
2021	7.47496