Year	%
2001	55.45078
2002	54.63925
2003	56.32052
2004	54.61518
2005	56.29082
2006	48.50795
2007	47.26995
2008	47.26706
2009	47.26995
2010	47.27589
2011	49.31704
2012	49.40131
2013	51.03839
2014	50.65239
2015	35.84733
2016	36.65007
2017	46.36838
2018	44.5476
2019	41.68408
2020	36.02625
2021	36.23764