Year annual % 1961 2.9786335040438976 1962 2.851415229977383 1963 2.7246061763359077 1964 2.6343089057501374 1965 2.677269666824613 1966 2.5898375557713944 1967 2.561320135660886 1968 2.469872845030122 1969 2.33577146037463 1970 2.0608537723037452 1971 1.97813382656193 1972 2.0755068673844006 1973 1.9426586357041002 1974 1.8649343650693835 1975 1.7809002866326675 1976 1.682834925395091 1977 1.578444886688766 1978 1.4906036259525932 1979 1.4740988612492754 1980 1.4666781309023182 1981 1.4722965177379945 1982 1.2888715979004843 1983 1.3059362687741378 1984 1.3092026099709264 1985 1.2229561833333957 1986 1.2410065015553746 1987 1.2555531740437964 1988 1.3041538746409373 1989 0.9672061570422134 1990 0.28686814236262964 1991 0.26842961994610703 1992 0.3462218607650404 1993 0.11354423054333151 1994 -0.43848389151969175 1995 -0.7318018094395142 1996 -0.8289664500925399 1997 -0.8531472409426625 1998 -0.8369237367315084 1999 -0.8845859688586785 2000 -0.9484773524088854 2001 -0.9943437993036109 2002 -0.8009019035754371 2003 -0.5975842615287372 2004 -0.5067622668152095 2005 -0.44769461628155494 2006 -0.4123564486197373 2007 -0.3353289463571341 2008 -0.2806355863083596 2009 -0.18512084160853823 2010 -0.26013716679592247 2011 -0.22411523273635522 2012 -0.11167545963582431 2013 -0.09257149776576587 2014 -0.3443252182843981 2015 -0.09701309027597461 2016 -0.15169376008089694 2017 -0.21731860919704749 2018 -0.2716720193533171 2019 -0.31033642526382854 2020 -0.40747642346247354 2021 -0.6010330696406113 2022 -14.084577407814935 2023 -2.4154211447170217