Year annual % 1961 -0.3299671688195208 1962 0.6495113767900995 1963 0.6989732253639553 1964 0.574162652083865 1965 0.6252461643703424 1966 0.6060964816665874 1967 0.22821781635982843 1968 0.21520404962371548 1969 0.5629450417582816 1970 0.10569312969257198 1971 -0.0259339846801199 1972 0.27225273425854296 1973 0.10829205741054904 1974 -0.16811202884795226 1975 -0.5803576232911566 1976 -0.6367079503511052 1977 -0.43475081346089695 1978 -0.292177255553474 1979 -0.16502901339821005 1980 -0.002248323576193223 1981 -0.3830743937671727 1982 -0.5329312076174654 1983 -0.24727940282321886 1984 0.2474313048646315 1985 0.6303059062926699 1986 0.3896373080465335 1987 -0.6493634152709282 1988 -0.21118614126096935 1989 0.8584820784645907 1990 0.33512455706374883 1991 0.16530931802912494 1992 0.41933573423597453 1993 0.14180016251750505 1994 -0.46007196925314076 1995 -0.5157568382267907 1996 -0.5229282207618395 1997 -0.664944089067214 1998 -0.8027533031619776 1999 -0.7520862687402955 2000 -0.6880097088627548 2001 -0.6540009759668931 2002 -0.6568491599228873 2003 -0.7723852269325315 2004 -0.8522409513460836 2005 -0.8900982988398402 2006 -0.9447258767859796 2007 -0.972624936417963 2008 -1.02760728004144 2009 -1.0936146975963257 2010 -0.9962105901499041 2011 -2.6995150155123566 2012 0.1439338862340761 2013 0.22909040138634915 2014 0.3730455234749801 2015 0.8218523100204106 2016 0.7019023859173192 2017 0.21114164552442413 2018 0.07598981778795712 2019 -0.05696567132211332 2020 -0.25923312979398283 2021 -0.3620946694888071 2022 0.2566753742078299 2023 0.28844893850504216