Year	Percent
1991	0.01167
1992	2.33238
1993	64.64877
1994	266.49979
1995	192.43893
1996	51.0093
1997	38.65136
1998	21.25374
1999	33.32565
2000	21.15742
2001	30.12422
2002	32.77526
2003	19.69042
2004	19.78378
2005	13.72844
2006	15.50953
2007	11.22231
2008	23.09122
2009	52.7324
2010	23.43425
2011	16.24933
2012	15.44991
2013	17.91136
2014	12.58837
2015	11.41741
2016	10.13557
2017	10.09421
2018	11.90393
2019	11.13594
2020	27.53894
2021	21.71974