Year	%
1990	14.7869674185464
1991	14.8456057007126
1992	14.9132947976879
1993	15.0513112884835
1994	15.0622876557191
1995	15.2505446623094
1996	15.3688524590164
1997	15.4589371980676
1998	15.5677655677656
1999	15.5516941789748
2000	15.4987633965375
2001	15.546875
2002	15.5261221486387
2003	15.5862068965517
2004	15.6572164948454
2005	15.634395670475
2006	15.6917885264342
2007	15.7451290152712
2008	15.7608695652174
2009	15.7845868152275
2010	15.83552055993
2011	15.8264462809917
2012	15.8761270090161
2013	15.9073935772965
2014	15.9195199435228
2015	15.9538357094365
2016	15.9443725743855
2017	16.0025101976781
2018	16.0244648318043
2019	15.981335666375
2020	16.0250926717993
2021	16.0598362969235
2022	16.1009817671809