Year annual % 1961 3.1342547312386273 1962 1.630246834276626 1963 3.0089253319856155 1964 3.701960383305398 1965 2.8377927320637824 1966 3.928524398612929 1967 1.332998867350966 1968 2.7122276448570517 1969 4.539806778808675 1970 3.7850036465983763 1971 3.5141465593571652 1972 5.565533865948524 1973 10.318872345844092 1974 14.489257682053207 1975 11.28697486432197 1976 10.109539702279655 1977 10.579939487056734 1978 8.861030683914485 1979 11.455004116218916 1980 12.864627339475433 1981 10.625287024999317 1982 10.839255799909203 1983 10.817400274057889 1984 11.717493387168503 1985 8.930830009156551 1986 8.022560895143187 1987 9.39994796567774 1988 8.957951870985468 1989 9.769009372536615 1990 10.583630703006364 1991 8.564279003866687 1992 6.961282006974386 1993 11.297973858390549 1994 23.249480757328172 1995 11.043789851394052 1996 9.074834888785134 1997 5.055345931060856 1998 6.963579516523268 1999 7.61207827777595 2000 8.506601078345597 2001 6.232012515473116 2002 3.6131613542673904 2003 5.946834789323447 2004 7.765278534605798 2005 7.501710130842014 2006 7.461344539657773 2007 7.036661074582156 2008 10.129115720623133 2009 3.360372570240905 2010 5.640971249553985 2011 9.195473165083428 2012 5.387257117561383 2013 4.2318417345034405 2014 3.088390727497888 2015 2.9278993647316653 2016 4.56511461778215 2017 4.0012517159815815 2018 4.104161749842497 2019 2.6635971589389555 2020 3.5366053190251705 2021 5.25930512123071 2022 8.486590755378067 2023 6.511464881460469