Year annual % 1962 1.4025248210369057 1963 2.7749834151698565 1964 3.140742655893064 1965 2.7524317131867804 1966 4.143078920708618 1967 1.5405441220649578 1968 2.3676421396913554 1969 3.8643468368338034 1970 3.7104552122830654 1971 3.4268271073833603 1972 5.565533865948524 1973 10.439719005942322 1974 15.67299883211114 1975 10.62388155359529 1976 8.44952547852462 1977 10.370077176244521 1978 7.370161853278788 1979 10.71313092890071 1980 12.59282164411428 1981 8.800193826331508 1982 8.673917004933152 1983 8.91968461045738 1984 10.190719975476114 1985 6.999561957306241 1986 5.938281607660528 1987 7.751491594081372 1988 8.957951870985468 1989 7.820709648615875 1990 8.012329034885468 1991 10.267848542402461 1992 8.744628979345023 1993 9.88439431062804 1994 16.572397275826177 1995 9.810040354402517 1996 8.373609994594688 1997 5.580197829968043 1998 6.158462785963678 1999 6.731820944220871 2000 6.351586758013326 2001 5.581974741771283 2002 3.9281182344124375 2003 5.435207322012268 2004 6.613610845260858 2005 7.012779392836407 2006 6.286380959087971 2007 7.193969627055019 2008 9.097011899978725 2009 2.8359721342077435 2010 5.609104506077728 2011 8.516660472745727 2012 5.645087175646424 2013 3.981180512250944 2014 3.670275579183894 2015 3.357772959564656 2016 3.0223064425633765 2017 3.9217186200013288 2018 3.2066452746209393 2019 3.3275329475476383 2020 2.8780322885979075 2021 4.684765727116783 2022 8.211656280637335 2023 6.1442403402406995