Year	%
2001	19.612
2002	18.86
2003	24.32
2004	20.498
2005	24.688
2006	15.33
2007	20.194
2008	22.996
2009	25.602
2010	26.189
2011	21.331
2012	23.091
2013	28.933
2014	27.261
2015	27.767
2016	29.502
2017	30.822
2018	31.032
2021	40.037
2022	27.028