Year annual % 1961 3.0743747383639572 1962 0.9132912034152767 1963 -0.6166942526548809 1964 3.4946789701940375 1965 2.7282875044438413 1966 5.187296043905889 1967 4.31924801045524 1968 2.4852464728383765 1969 3.9672165328720723 1970 6.241325374738118 1971 4.223662157021863 1972 7.132566428960757 1973 15.301473539205702 1974 16.049272207670967 1975 11.933753130803211 1976 11.502459895853903 1977 10.4461251876848 1978 7.349181984625972 1979 12.85276675004765 1980 12.740934927816937 1981 7.355999412788819 1982 6.659119448360755 1983 6.816755345527085 1984 8.766593894101902 1985 4.534942787126312 1986 4.48351413387438 1987 6.962385149490217 1988 5.933616074978012 1989 3.7628912064542135 1990 5.295115377205775 1991 5.993131638201959 1992 4.0115805314625845 1993 4.756478221573474 1994 5.882472347036028 1995 5.065144059444336 1996 3.5652587614733307 1997 3.2900559949146952 1998 3.2110019999290955 1999 5.8622861838065035 2000 2.998888195402401 2001 3.2453962100387628 2002 2.7129502947473156 2003 5.22451730389426 2004 3.7472262139151695 2005 5.136601106633947 2006 4.632587859424902 2007 5.014297890901375 2008 7.256763879788551 2009 1.7651258761991073 2010 4.2297849990792855 2011 5.340945135290269 2012 3.926150008652371 2013 3.621296542024794 2014 2.0142126302225734 2015 2.7583920627998566 2016 2.1019411183078773 2017 3.0319330094508814 2018 2.724915825612584 2019 2.3877850530415117 2020 0.36616044672881287 2021 4.330747558566202 2022 8.182120608038616 2023 4.0331441445467675