Year annual % 1960 3.72881355932203 1961 2.28758169934641 1962 -0.319488817891379 1963 0.641025641025652 1964 2.86624203821656 1965 3.40557275541795 1966 3.29341317365269 1967 3.47826086956522 1968 2.52100840336134 1969 3.27868852459016 1970 3.43915343915341 1971 6.13810741687984 1972 6.02409638554213 1973 9.09090909090915 1974 15.4166666666666 1975 15.1624548736462 1976 13.3228840125392 1977 12.3098201936376 1978 8.0049261083744 1979 9.12200684150515 1980 10.1358411703239 1981 9.48766603415561 1982 11.3518197573657 1983 10.0389105058366 1984 3.96039603960396 1985 6.734693877551 1986 9.05035054174634 1987 8.53302162478083 1988 7.21593968766828 1989 7.53390256152688 1990 7.33302195235872 1991 3.17667536988685 1992 1.01223112610714 1993 1.75365344467641 1994 1.96963479688141 1995 4.62776659959759 1996 2.61538461538461 1997 0.224887556221887 1998 0.860134629768142 1999 1.48312940304041 2000 4.45743514797224 2001 4.40713536201469 2002 2.98157453936348 2003 2.73259596616786 2004 2.34325522482583 2005 2.69183168316832 2006 3.55528773727026 2007 2.32761128891476 2008 4.35029854990048 2009 1.77111716621254 2010 2.91834002677376 2011 3.3038501560874 2012 1.76278015613196 2013 2.4498886414254 2014 2.48792270531404 2015 1.50836672165921 2016 1.27699094497324 2017 1.94864740944527 2018 1.91140094445691 2019 1.61076787290379 2020 0.846905537459305 2021 2.86391042204994 2022 6.59409671341846 2023 5.5970149253731