Year	%
2001	21.65967
2002	22.22178
2004	19.77547
2005	19.29652
2006	19.13637
2007	19.16579
2008	29.578
2009	28.86348
2010	19.45147
2011	27.41918
2012	17.18248
2013	20.50685
2014	28.40064
2015	30.12933
2016	30.70615
2017	16.36822
2018	9.338254
2019	19.61719
2020	21.93281
2021	22.13893