Year	%
1990	51.5141296283807
1991	52.20700152207
1992	52.8134403209629
1993	53.3109111557613
1994	53.7441860465116
1995	54.142887338829
1996	54.4506816359262
1997	54.7192176618758
1998	55.0002807569207
1999	55.342191973208
2000	55.5147521191237
2001	55.6735876388218
2002	55.8053742550916
2003	55.9226801962346
2004	56.0217116271477
2005	56.107137848829
2006	56.179886433334
2007	56.2532827545959
2008	56.3263358778626
2009	56.4166589024504
2010	56.5247339895227
2011	56.6626650660264
2012	56.9226520290681
2013	57.3737749868824
2014	57.9801683193067
2015	58.6807093524944
2016	59.3502874905378
2017	60.0604162712722
2018	60.7462478940291
2019	61.3895646655283
2020	62.0145989715704
2021	62.5568000926167
2022	62.937643020595