Year annual % 1961 1.933946526073882 1962 1.360735324684697 1963 1.1768267623639446 1964 2.5474988709299993 1965 3.846275632345211 1966 5.788742005732601 1967 7.581551074151463 1968 2.1661494483019084 1969 1.5843552575615547 1970 5.978593379611723 1971 4.664180022913939 1972 10.775422187003443 1973 9.906612341824612 1974 12.796924142647725 1975 16.467281858118838 1976 11.315529886275556 1977 4.937383312178326 1978 12.466811354347158 1979 21.856361741550458 1980 10.190282525939239 1981 -0.08832283728405343 1982 3.6954183745147446 1983 8.745485395317829 1984 15.426985066279883 1985 22.8936594351147 1986 14.061249874598076 1987 12.694069823943323 1988 22.69705956848229 1989 13.648777258978285 1990 6.300018284071541 1991 5.1777099369234065 1992 6.639280853553473 1993 13.064700488920906 1994 9.463804701589424 1995 7.155294852534524 1996 16.112195448809103 1997 4.99060848779871 1998 9.967270818816559 1999 14.235208494516911 2000 14.170966914369743 2001 8.312824999512983 2002 1.187370696131211 2003 3.2590843720066403 2004 10.078788653573099 2005 15.471706569310513 2006 5.154398360233699 2007 6.029197650644022 2008 9.372730255634679 2009 15.108933748083885 2010 7.683061453324697 2011 12.65332158335191 2012 3.0118416084237793 2013 1.532120998010896 2014 9.604002202587509 2015 3.730317375551053 2016 11.904911131819773 2017 -2.6499192764329678 2018 0.05719695854082829 2019 0.5075854356530982 2020 4.378993827412316 2021 8.381449723998287 2022 14.617550974813781 2023 2.1258602441845937