Year annual % 1961 1.1600410414137343 1962 1.1089403898758547 1963 1.0455003879697387 1964 0.9759019509185691 1965 0.7956839239140265 1966 0.6980950145086524 1967 0.6387210001849581 1968 0.564261852035969 1969 0.45663710881756003 1970 0.3190961068575575 1971 0.36252954465192033 1972 0.440997672889921 1973 0.39738709169354536 1974 0.3643694955204779 1975 0.3885767131242517 1976 0.4463950637844363 1977 0.4969000639389378 1978 0.47514508669262057 1979 0.5017492085076327 1980 0.5591543431586956 1981 0.07649327243188964 1982 -0.09978385074596474 1983 -0.051876365593642504 1984 -0.07902347827811695 1985 -0.06760104622729557 1986 0.1250098918639253 1987 0.2121911044347371 1988 0.17129798181355227 1989 0.12713854479034126 1990 0.3148235284090646 1991 0.5396396989400927 1992 0.4434038037306465 1993 0.20216793987756887 1994 0.010805882218491547 1995 -0.11254073803345932 1996 0.10781569453340012 1997 0.042257436020335604 1998 -0.07318410985787693 1999 -0.1687470418228969 2000 -0.14721076379508702 2001 -0.20620172787300817 2002 -0.29468458325581537 2003 -0.3207664606341041 2004 -0.2995735347069939 2005 -0.3059189099050741 2006 -0.2823948156848246 2007 -0.36106133109994687 2008 -0.10117202385019652 2009 -0.017690116425470137 2010 0.16914629021178484 2011 0.24413063096355359 2012 0.16730097275524258 2013 0.23835985285471395 2014 0.2640587601335085 2015 0.3062300764602668 2016 0.2865717526324545 2017 0.22474059989238526 2018 0.20172185529136755 2019 0.21859314889694303 2020 0.06644453960515762 2021 0.1017805803645615 2022 -1.784967442686792 2023 -0.3551748130653607