Year	%
1990	25.147347740668
1991	25.434439178515
1992	25.4752851711027
1993	25.6592292089249
1994	25.7959183673469
1995	25.8839226150767
1996	26.1865793780687
1997	26.398916967509
1998	26.5391969407266
1999	26.6356692128861
2000	26.741440377804
2001	26.8508583690987
2002	26.9651741293532
2003	27.0872420262664
2004	27.2178770949721
2005	27.395498392283
2006	27.5613275613276
2007	27.6722090261283
2008	27.7619859768808
2009	27.8229448961156
2010	27.847448891943
2011	27.8421138476594
2012	27.8551532033426
2013	27.881368374688
2014	27.9040580114349
2015	27.9251790925975
2016	27.9605263157895
2017	27.9903147699758
2018	28.0381439702291
2019	28.0892576810944
2020	28.1294104874607
2021	28.1401731053409
2022	28.1736619573064