Year annual % 1961 4.66308817013148 1962 4.6942969010360684 1963 4.737346842041668 1964 4.788145277959244 1965 4.798902604304075 1966 4.751500857273158 1967 4.961314654816711 1968 5.056263048037412 1969 5.035751609403036 1970 5.059751552097815 1971 5.010685821026966 1972 4.946113669000188 1973 4.933769870537422 1974 4.961525900533209 1975 4.990212605800821 1976 4.94003924877003 1977 4.722038643476976 1978 4.699822096401747 1979 4.83540029098619 1980 4.979561281504664 1981 6.432201123249453 1982 6.337496032090975 1983 4.969659859033521 1984 4.9877075908340345 1985 4.91821377915738 1986 4.79803427736418 1987 4.347697514567325 1988 4.041872081424707 1989 3.866193525463461 1990 4.883724985400491 1991 4.807892447265533 1992 3.7299418782312266 1993 2.134627429812984 1994 1.8452942686029725 1995 2.771008966290326 1996 2.7160028931684637 1997 2.6681024235426487 1998 2.7390103630070946 1999 2.7437504713361696 2000 2.7823395346719604 2001 2.821844012692718 2002 2.0639477124331926 2003 1.9974138054089048 2004 2.663672228594077 2005 2.635140518807623 2006 2.548572650468867 2007 2.365366402484028 2008 2.2307556694680644 2009 2.2020349613974726 2010 2.2304696365764953 2011 2.0869960472816924 2012 2.0538984098847743 2013 2.2062487598266673 2014 2.6345134750389523 2015 2.98414485934981 2016 2.544866456622477 2017 2.1221397074341293 2018 1.9830726815186464 2019 1.755664998396502 2020 1.4737918949687017 2021 1.3416695135455874 2022 1.3140694607110668 2023 1.2843643955904076