Year	%
1990	44.6927374301676
1991	44.1860465116279
1992	43.9824945295405
1993	43.6220472440945
1994	43.2234432234432
1995	42.8571428571428
1996	42.6086956521739
1997	42.3887587822014
1998	42.1773612112473
1999	42.0299727520436
2000	41.8574231523872
2001	41.7777777777778
2002	41.5270018621974
2003	41.4619532654284
2004	41.4031052328925
2005	41.4634146341463
2006	41.5591397849462
2007	41.7190775681342
2008	41.8676244227809
2009	41.9436052366566
2010	41.8109846610589
2011	41.6585365853659
2012	41.4739884393064
2013	41.2297426120114
2014	40.9929078014184
2015	40.7808090310442
2016	40.5342080599813
2017	40.2894491129785
2018	39.9906890130354
2019	39.7584765443567
2020	39.6287703016241
2021	39.5726892707849
2022	39.5435491383326