Year	%
2002	9.54150323596095
2003	9.83931168042677
2004	10.1667218457432
2005	10.1503557634588
2006	9.517944993933
2007	10.9938508263563
2008	9.3702598365416
2009	7.58063046634046
2010	8.64764011395425
2011	8.23675339049387
2012	7.67463613213552
2013	6.57881884807328
2014	5.48951502356822
2015	4.22619645319521
2016	3.53340793326882
2017	3.67960022595704
2018	3.83711503544425
2019	5.17518323954627