Year annual % 1962 1.5930546841379254 1963 3.31096996153461 1964 2.9061779508730012 1965 2.9231537509407843 1966 3.7370022618910212 1967 1.247044751725923 1968 2.3676421396913554 1969 3.8643468368338034 1970 3.036120487311365 1971 3.1721761414523257 1972 5.304311245833475 1973 10.18195852522139 1974 15.439086056249778 1975 9.460989246830366 1976 8.326878452472634 1977 9.633213734424928 1978 7.966156513945208 1979 10.317257592112263 1980 12.517177763060644 1981 9.502608385309621 1982 9.0465164203043 1983 9.1071525835793 1984 11.396720492257721 1985 8.930830009156551 1986 7.326263985326953 1987 11.306944046584569 1988 9.796055393620435 1989 8.337973249855366 1990 11.858705769931419 1991 12.758199300754683 1992 11.150082868787024 1993 10.841761810167384 1994 22.147259018823014 1995 11.06400010587798 1996 10.073834864831255 1997 6.4983785778564 1998 7.344862429856342 1999 7.110272741878447 2000 6.693021839667324 2001 6.554118436008437 2002 4.582137352165546 2003 5.759740766556746 2004 6.885623130454576 2005 7.501710130842014 2006 7.461344539657773 2007 7.432635480316534 2008 9.213717485620947 2009 4.035303861572871 2010 6.081891397222151 2011 8.580398958147882 2012 5.893158922512924 2013 4.329351573956927 2014 3.790250385949683 2015 4.050681567605771 2016 3.545466341194029 2017 4.290868770785167 2018 3.3648301242576437 2019 3.4670976769925232 2020 3.1945316999081044 2021 4.924550325971381 2022 8.241191953236054 2023 6.544825730159822