Year	%
2001	19.22309
2002	16.32871
2004	19.03916
2005	16.82314
2006	17.15013
2007	17.85825
2008	25.15745
2009	26.21338
2010	16.96782
2011	24.40216
2012	17.156
2013	25.69982
2014	25.65736
2015	26.45715
2016	28.05449
2017	22.14623
2018	17.04149
2019	16.21345
2020	18.21124
2021	18.806