Year	%
2001	20.24209
2002	21.05528
2004	18.71347
2005	18.07318
2006	18.09358
2007	17.91892
2008	27.61328
2009	26.97409
2010	18.51237
2011	25.85319
2012	16.42199
2013	18.77437
2014	26.93761
2015	28.44274
2016	29.10993
2017	14.9441
2018	8.708595
2019	18.8013
2020	20.88158
2021	21.1312