Year % 1990 55.79618952134282 1991 56.357768955744284 1992 56.93517096799815 1993 57.484319845681554 1994 57.752197588509965 1995 58.07887221579188 1996 58.32061864594278 1997 58.54526896710145 1998 58.69301959199721 1999 58.80787239385098 2000 58.95339971348511 2001 59.058199900647395 2002 59.14215033520612 2003 59.19712968913907 2004 59.240955711559536 2005 59.317711427621504 2006 59.37795168049903 2007 59.39940160546063 2008 59.470845776421456 2009 59.54063619467993 2010 59.63053039889691 2011 59.78005567816028 2012 60.01237513332919 2013 60.321185097655366 2014 60.69162491371666 2015 61.02106282296056 2016 61.3515801937017 2017 61.69527849640226 2018 62.07376667454317 2019 62.40676121017097 2020 62.7222949294539 2021 63.0169701354015 2022 63.290235245890635