Year annual % 1961 5.681626536358027 1962 5.720832657486459 1963 5.7123600274585264 1964 5.744451821455245 1965 5.7506471158913675 1966 5.740157474277477 1967 5.76379662628979 1968 9.682847423578131 1969 10.489930231240407 1970 10.5020787219133 1971 10.536378882183268 1972 10.573254847219655 1973 10.551762660365265 1974 10.51378802610066 1975 10.486741341912872 1976 10.454208100811643 1977 10.360280705753484 1978 10.226676351872428 1979 6.832359126115866 1980 6.038936000337237 1981 5.879460197481926 1982 5.8659964409894325 1983 6.04785966954782 1984 6.0149786808817955 1985 6.0016413311140875 1986 6.076698199344027 1987 6.037894609303478 1988 5.803339469308547 1989 4.565713358582567 1990 4.3449696165857885 1991 4.281118706802613 1992 4.226101763989769 1993 4.8500510687810685 1994 5.567227350316522 1995 4.866569666871796 1996 3.547701237768399 1997 3.7074533911706147 1998 4.258901365321996 1999 4.281405764782143 2000 4.472783839148266 2001 4.344246379407803 2002 4.235741155271112 2003 5.091809753740542 2004 5.2725884030301895 2005 5.308371284887737 2006 5.322382004457351 2007 5.298791166798413 2008 5.206263956010467 2009 4.949957438900314 2010 5.018489354645917 2011 5.256752346291669 2012 5.293763130845173 2013 5.380430077559895 2014 5.437558906879807 2015 5.625505691873834 2016 5.716223626380085 2017 5.573543617831078 2018 5.353053234367302 2019 5.142630880584714 2020 5.099205140263197 2021 5.050037871362754 2022 4.9631548482622145 2023 4.881960817060662