Year annual % 1961 2.06164083243625 1962 2.07608983788418 1963 2.0894580522661 1964 2.10016219047074 1965 2.11276562439077 1966 2.12889081112016 1967 2.14622700807727 1968 2.16439573965776 1969 2.18251397639122 1970 2.19579577236243 1971 2.21217652524773 1972 2.22612461597062 1973 2.23696246839572 1974 2.2493254448799 1975 2.24849070467482 1976 2.24802231080812 1977 2.25422317473924 1978 2.25289617002571 1979 2.2394999953242 1980 2.21589914551744 1981 2.18822674879911 1982 2.16183267496413 1983 2.13853594637472 1984 2.12261776942191 1985 2.11605770951857 1986 2.11283174293707 1987 2.11563058892712 1988 2.11864797976108 1989 2.10965105220391 1990 2.09408169694284 1991 2.07379468212719 1992 2.04289956762452 1993 2.00918364775402 1994 1.95873086716432 1995 1.9021772687113 1996 1.86850882962671 1997 1.83860984739205 1998 1.81817024384979 1999 1.81906465021901 2000 1.80379049207336 2001 1.76981723900868 2002 1.75107228754869 2003 1.74628939852943 2004 1.73917027368374 2005 1.7329882488039 2006 1.74713275481179 2007 1.75023288737608 2008 1.72976143588269 2009 1.71311404940389 2010 1.69628237644672 2011 1.67782849865133 2012 1.65463539887486 2013 1.62957319915505 2014 1.60331510672219 2015 1.5731449401483 2016 1.54728829634713 2017 1.52010888105833 2018 1.48747419672442 2019 1.45750439141779 2020 1.33973922043111 2021 1.19348671867883 2022 1.1902748132628 2023 1.336412296715