Year annual % 1961 1.8265646744083301 1962 1.9213620527806792 1963 1.9431524219440748 1964 1.9770967585005268 1965 2.0263810000287377 1966 2.0453897054542427 1967 2.0720228007790027 1968 2.1060784608892877 1969 2.1149492152897333 1970 2.1317866700507584 1971 2.113818441815629 1972 1.9465782005797054 1973 1.9405840751896468 1974 1.9327957791310146 1975 1.9413764219864214 1976 1.9249452992230072 1977 1.96745852468913 1978 2.0332683950348582 1979 2.0433531244006464 1980 2.054584247677027 1981 2.036022429680677 1982 2.078629154830362 1983 2.1129545635683886 1984 2.0904883226949784 1985 2.0150417633077824 1986 1.9382049320979495 1987 1.83901329231805 1988 1.8101519543450622 1989 1.9105858531720328 1990 2.08987775353518 1991 2.2294266011494175 1992 2.3550685228402943 1993 2.23141276396578 1994 1.9661879383282794 1995 1.8130467111525557 1996 1.5966635269166907 1997 1.4748227010758503 1998 1.3625304987814417 1999 1.242465590788473 2000 1.0881792984314835 2001 0.9647303232931193 2002 1.1547634305611614 2003 1.0269403095522747 2004 0.8871591364382028 2005 0.7130266474676313 2006 0.5162103934829366 2007 0.35338879686723984 2008 0.24105541489528132 2009 0.14649871615156213 2010 0.0963922167018489 2011 -0.02411920988631726 2012 -0.18760455345721672 2013 -0.24752118763292372 2014 -0.15380521209836512 2015 0.07888223868863188 2016 0.4306292219479254 2017 0.6626986109449858 2018 0.638446610577172 2019 0.6204453453005403 2020 1.243099123721772 2021 1.7663228585318949 2022 1.1298513836477815 2023 0.5589352074686778