Year	%
1993	3.271603
1994	27.25984
1996	26.28327
1997	34.75411
2001	19.75023
2002	18.61442
2005	17.39185
2007	35.25399
2008	35.25743
2009	35.51021
2010	21.04689
2011	24.85859
2012	8.9484
2013	24.20036
2014	11.51673
2015	6.657606
2016	4.495409
2017	3.61126
2018	0.4914823
2019	0.6726267
2020	0.6103508
2021	1.915563