Year annual % 1962 2.0915622928210524 1963 2.133005407713398 1964 3.8559432114296754 1965 3.0254854105308056 1966 3.6610668045652375 1967 2.1662562302218618 1968 2.1084073692070575 1969 3.0025238664727283 1970 3.614424383721939 1971 3.413529528745812 1972 5.897933680642595 1973 12.74859449255726 1974 16.667515734233845 1975 8.378411575717507 1976 8.637336104912777 1977 8.896350292605334 1978 6.772631918281547 1979 11.488763144686317 1980 12.62905634543879 1981 9.736332745883836 1982 8.995458874055728 1983 10.64698188566826 1984 9.908621737394782 1985 7.193785444529425 1986 7.39227630448525 1987 7.751491594081372 1988 9.617560649784096 1989 8.707165662246673 1990 10.652751293411072 1991 13.492416253721345 1992 11.150082868787024 1993 10.774909271590388 1994 11.092601377314807 1995 10.10891242296399 1996 8.266851504250738 1997 8.449792012095529 1998 7.465657444179961 1999 6.016272589844881 2000 5.687998676901401 2001 5.722740604598975 2002 4.200873865282361 2003 5.435207322012268 2004 5.808085881000906 2005 6.098034615678614 2006 7.36000850485555 2007 7.022074622965029 2008 10.403378925635124 2009 3.819409522877379 2010 7.269243247574899 2011 8.783373565213829 2012 7.046251362715807 2013 4.433019567502363 2014 3.6722281154495136 2015 3.3162073959517073 2016 2.5178459360124066 2017 4.080784811961834 2018 3.8417866327479686 2019 3.575454469320661 2020 3.401982283487044 2021 4.6477159422306755 2022 7.547110515595264 2023 5.299619895726309