Year annual % 1961 0.5349285205061136 1962 0.5716186813495767 1963 2.116457516169305 1964 2.8242852366138465 1965 0.620057280965014 1966 1.2776320615814427 1967 2.5886728485992876 1968 0.5641177681652749 1969 1.2081923381484785 1970 3.4224377869879845 1971 2.9033395361679766 1972 4.998020937810679 1973 8.542225790571933 1974 11.611379758001078 1975 9.382834473046643 1976 4.5345118776278355 1977 4.656795341906218 1978 7.921356425142918 1979 9.245217951496912 1980 10.14050469048577 1981 3.6421656123921196 1982 4.871684951661351 1983 7.496956847108407 1984 1.6292632422830735 1985 0.8095652198073964 1986 0.33844938626683074 1987 2.2893026516840536 1988 -0.1919291681147257 1989 -1.2765581958342267 1990 0.5652053752414048 1991 0.49279633082677776 1992 5.061059509331173 1993 3.5547047307799176 1994 3.6797454101237435 1995 0.46670710183605024 1996 -0.9423837804938131 1997 1.6088390325678148 1998 0.997519102698746 1999 0.8423869507882671 2000 -1.2481818624538477 2001 1.028214080687846 2002 1.6713358456605505 2003 1.1313642557216639 2004 1.9650045387153767 2005 1.7483213498389745 2006 1.9699847513745823 2007 4.824940187699525 2008 7.527495050031135 2009 6.470960113043603 2010 2.5901539464769456 2011 5.8440989281363045 2012 6.175970021751027 2013 5.504170404683677 2014 4.1978893257403485 2015 2.4787689050220507 2016 2.0021087010961622 2017 1.729147547578691 2018 4.339912254612727 2019 0.31525086650722756 2020 -0.550968761620453 2021 1.9353128597231546 2022 2.4494036660911718 2023 1.535415763802959