Year annual % 1961 1.923286138159682 1962 2.138438226839966 1963 2.124910597141465 1964 2.067387769121183 1965 1.9755667350690942 1966 1.847702317127471 1967 1.717848352801937 1968 1.6826324697600654 1969 1.694161612326269 1970 1.715818753663072 1971 1.7587179548311411 1972 1.7019938816969216 1973 1.618628436666043 1974 1.5542186346175697 1975 1.5875398501484312 1976 1.695695793542356 1977 1.7531833343920056 1978 1.722619417676924 1979 1.718625189831812 1980 1.7179930857068086 1981 1.655667382481127 1982 1.623422899624913 1983 1.5970342944431763 1984 1.5926539907747213 1985 1.6759864023590865 1986 1.7090699995924865 1987 1.6993911298572186 1988 1.7040631259035877 1989 1.7028712485185764 1990 1.7293098011141836 1991 1.7071506311851579 1992 0.9046880382826572 1993 0.74317114603177 1994 0.9834188064286451 1995 0.9574010364991352 1996 1.239387536202301 1997 1.3357845439466445 1998 1.3451390305964281 1999 1.440778501102912 2000 1.395878157800425 2001 1.289328963103472 2002 1.277790490772901 2003 1.2620832930995078 2004 1.3586991071625363 2005 1.4372045579899861 2006 1.4519383798556476 2007 1.4632611283171428 2008 1.4447575270821034 2009 1.3727905103729938 2010 1.149181663776929 2011 0.8890917439422736 2012 0.9971933305927365 2013 1.1507206150852767 2014 1.2447087314335477 2015 1.2749099376754884 2016 1.219567021895827 2017 1.2357610716902627 2018 1.2483630371302468 2019 1.0453714606515092 2020 0.7666424357922352 2021 0.7599391130960669 2022 1.0519494751155065 2023 1.030179531218863