Year	%
2000	2.47998813355665
2001	2.26940469618512
2002	2.0430215813261
2003	1.85317785999554
2004	1.66948870133929
2005	1.42784786121031
2006	1.33469274656628
2007	1.29703242629521
2008	1.28405542780109
2009	1.28292330119413
2010	1.17927936603175
2011	1.08761391151108
2012	0.945167598091264
2013	0.989938666122345
2014	1.09460217171973
2015	1.06642670356494
2016	0.908051187517065
2017	0.982616851210848
2018	1.09291153928312
2019	1.00951080566861
2020	0.991661558157354