Year	%
1993	4.177714
1994	14.30807
1996	13.71378
1997	18.69734
2001	12.65406
2002	13.17064
2005	13.1122
2007	26.83665
2008	25.73424
2009	27.06031
2010	25.37525
2011	28.67439
2012	15.37797
2013	26.7322
2014	17.19337
2015	10.24882
2016	2.573569
2017	2.511583
2018	0.8122858
2019	1.368753
2020	1.201372
2021	5.811562