1959 2.36651780178928 2.36651780178928 1960 2.41527943719791 2.41527943719791 1961 2.46404107260654 2.46404107260654 1962 2.51362165034108 2.51362165034108 1963 2.56403492438123 2.56403492438123 1964 2.61529487970181 2.61529487970181 1965 2.66741573615289 2.66741573615289 1966 2.72041195240384 2.72041195240384 1967 2.77429822995495 2.77429822995495 1968 2.82908951721524 2.82908951721524 1969 2.88480101364942 2.88480101364942 1970 2.99475181521803 2.9414481739942 1971 2.98164027491028 2.99904671254589 1972 3.13232797728769 3.05761260751911 1973 3.31873987644561 3.1171621054796 1974 3.30942878260388 3.17771172585136 1975 3.29726735391264 3.23927826549844 1976 3.48614954327347 3.30187880338541 1977 3.58971170947232 3.36553070531462 1978 3.72158720184296 3.43025162874372 1979 3.82514936804181 3.49605952768409 1980 3.77954401044965 3.5629726576812 1981 3.70733552759541 3.63100958087882 1982 3.66268028161976 3.70018917116871 1983 3.68852331758865 3.77053061942565 1984 3.80405689015544 3.84205343883161 1985 3.8536527165369 3.91477747028879 1986 3.92054057433873 3.98872288792345 1987 4.04671539701035 4.06391020468262 1988 4.19227249665864 4.14036027802397 1989 4.26619118042258 4.21809431570264 1990 4.31027635942833 4.2971338816535 1991 4.33383912751761 4.37750090197395 1992 4.32148767650307 4.45921767100582 1993 4.34048990883313 4.54230685752017 1994 4.38742542268839 4.62679151100563 1995 4.51265013374351 4.71269506806278 1996 4.6000604024618 4.80004135890531 1997 4.66390790309082 4.88885461397059 1998 4.68177000148108 4.97915947064199 1999 4.7193944214946 5.07098098008268 2000 4.88357370882635 5.16434461418521 2001 4.94077042813984 5.25927627263811 2002 5.02780065221153 5.35580229010986 2003 5.26494851169073 5.45394944355486 2004 5.51159748733495 5.55374495964112 2005 5.71036083750742 5.65521652230349 2006 5.90608383050707 5.75839228042316 2007 6.14133146675326 5.86330085563647 2008 6.17097494918816 5.96997135027439 2009 6.09800637704072 6.07843335543638 2010 6.45524834484591 6.18871695919828 2011 6.65743209683779 6.30085275495977 2012 6.74332218696968 6.41487184993073 2013 6.82294154043264 6.53080587376051 2014 6.88716908570826 6.64868698731243 2015 6.88773915267816 6.76854789158557 2016 6.8978103358131 6.89042183678576 2017 6.99187138584691 7.01434263154972 2018 7.15776087408837 7.14034465232387 2019 7.22407866492029 7.26846285290033 2020 7.39873277411341 7.39873277411341 2021 7.53119055369928 7.53119055369928 2022 7.66587293631993 7.66587293631993 2023 7.80281728375739 7.80281728375739 2024 7.41356279817357 7.41356279817357 2025 7.02430831258974 7.02430831258974 2026 6.63505382700591 6.63505382700591 2027 6.24579934142209 6.24579934142209 2028 5.85654485583826 5.85654485583826 2029 5.46729037025444 5.46729037025444 2030 5.07803588467061 5.07803588467061 2031 4.68878139908678 4.68878139908678 2032 4.29952691350296 4.29952691350296 2033 3.91027242791913 3.91027242791913 2034 3.5210179423353 3.5210179423353 2035 3.13176345675148 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