Year annual % 1961 4.408827906717306 1962 5.582104819207885 1963 5.014227689522002 1964 6.37609640188866 1965 5.489093593788823 1966 5.506040762674516 1967 3.7741157597081383 1968 5.844857982348529 1969 5.575498441328335 1970 2.676546481464243 1971 3.7227710407463803 1972 5.303517502826381 1973 6.068144130882388 1974 0.896023350578858 1975 -0.053352737353748125 1976 4.742612823496259 1977 3.7715742623360313 1978 4.293569201832199 1979 3.811664369264676 1980 1.0776367178978035 1981 1.9511957855733613 1982 0.199026799173339 1983 3.148675051447185 1984 4.791849898761512 1985 3.725527991255447 1986 3.182922484070744 1987 3.5291816086297843 1988 4.667094075323732 1989 3.8036489340132533 1990 2.707214776326225 1991 1.0277352338667072 1992 1.9031714877684465 1993 1.1549620538048089 1994 3.137414279198296 1995 2.6990013809035105 1996 2.9222854891660717 1997 3.426635769704916 1998 2.8405106704229865 1999 3.5284569577442824 2000 4.034973041434682 2001 1.5329838898486798 2002 1.5295007087310353 2003 2.0177784741567564 2004 3.208537122663529 2005 2.7671869657006596 2006 2.9205546465489647 2007 2.541808247773062 2008 0.35573738477300765 2009 -3.391446177884035 2010 2.909982314247145 2011 1.6665573928698336 2012 1.2563669074853152 2013 1.5091144019127967 2014 2.011471875139634 2015 2.224385159387481 2016 1.7979265365722057 2017 2.46508650194248 2018 2.250565755041791 2019 1.7686055087488057 2020 -4.123748813672364 2021 5.446238204596199 2022 2.4132329558898817 2023 1.6893208455049944