Year	%
1990	25.1743892165122
1991	25.6281336262746
1992	26.0596546310832
1993	26.4771327737702
1994	27.3526615969582
1995	27.7289309682664
1996	27.9974700694447
1997	28.2135630328295
1998	28.415542959643
1999	28.5936160751687
2000	28.7490348092627
2001	28.8967255672528
2002	29.0239807393797
2003	29.1297108416782
2004	29.2174085169494
2005	29.3144105171257
2006	29.3938494133509
2007	29.4404871029358
2008	29.4833585383547
2009	29.4987284062573
2010	29.5288228593797
2011	29.5792626586851
2012	29.6845950823299
2013	29.9041250976448
2014	30.113032436977
2015	30.2133297999205
2016	30.2639355494459
2017	30.357536646154
2018	30.3991249005569
2019	30.4122057347381
2020	30.4410884883131
2021	30.4859554869051
2022	30.5337217872042