Year annual % 1961 5.9655029284551375 1962 6.420282138427516 1963 6.662442733816352 1964 6.559967833363036 1965 6.479431204916342 1966 5.742815082283322 1967 5.441438226953787 1968 5.427653082836669 1969 5.401191880951018 1970 5.384734101298333 1971 5.312028688145184 1972 5.238402552979397 1973 5.18901592369714 1974 5.090421130571983 1975 4.9654601647215335 1976 4.8794170936059444 1977 4.885370425417302 1978 4.5405436288669545 1979 4.224000738153253 1980 4.147288700231098 1981 3.991676050091067 1982 3.793030200999236 1983 3.935770881088919 1984 4.076013681810861 1985 3.348719970719737 1986 3.382995298695022 1987 3.6382345720876916 1988 2.397056755766755 1989 2.383121704658773 1990 0.9673698914027515 1991 0.794692343159601 1992 2.7106556645578426 1993 4.564497671127205 1994 4.5477892188875 1995 3.1323915340819637 1996 2.970590193338294 1997 2.8708381551355457 1998 3.1602973074875895 1999 3.3528635467160943 2000 3.415115576649292 2001 3.262820568098031 2002 3.28979552871636 2003 3.1299874363908646 2004 2.9557790876733465 2005 3.048265719837353 2006 0.7954772964743719 2007 -0.7717860826575016 2008 2.0048332700326488 2009 3.6756600734279767 2010 3.3490879573980497 2011 3.737066187049348 2012 4.724947627518159 2013 4.899906029275677 2014 3.736213568265211 2015 2.9483676203063367 2016 2.7065200128165356 2017 2.61985281061518 2018 2.694646717922165 2019 2.6588587670681316 2020 2.665846559664641 2021 2.587170386494721 2022 2.516805591542774 2023 2.5838203999389204