Year	%
1999	2.707523
2000	2.526052
2001	2.669405
2002	1.752022
2003	1.720633
2004	1.755327
2005	1.163912
2006	1.43058
2007	1.518675
2008	1.34147
2009	1.638134
2010	1.88971
2011	1.729645
2012	1.729645
2013	0.2813244
2014	0.2272278
2015	0.135496
2016	0.1344602
2017	0.8211204
2018	0.5028401
2019	0.218934
2020	0.0214202
2021	0.0250627