Year annual % growth 1961 2.1280366784755245 1962 4.112848046653056 1963 7.64520947571053 1964 9.842333532035298 1965 7.356530364851395 1966 5.920578464106569 1967 2.038016986525548 1968 0.592100331141765 1969 1.7128266855245045 1970 5.499304043259244 1971 3.179407602887423 1972 0.9122044262185369 1973 5.540422862192983 1974 4.343590935483618 1975 1.966476632313416 1976 1.5088542166824084 1977 0.27827674318943707 1978 1.5647611328060123 1979 3.925306573345594 1980 0.7365958243691182 1981 5.742923723980837 1982 6.696910948237829 1983 4.750197811797307 1984 8.394740096245371 1985 2.781339102914444 1986 2.216838622546774 1987 3.9554501373790174 1988 3.31266117802069 1989 2.469694241966792 1990 4.91624841627582 1991 1.309354194313599 1992 4.320390846654959 1993 0.6213560422098681 1994 2.728441876589301 1995 3.6505148491670525 1996 4.248004835908617 1997 2.004739138679838 1998 2.8576391850789093 1999 2.4194807213724374 2000 2.442372730633238 2001 2.293382714558973 2002 3.383437210364008 2003 2.874338072902873 2004 4.771456429144422 2005 4.834788402847991 2006 4.365890134948458 2007 2.855661974331383 2008 3.4773282113531536 2009 2.2858950394345214 2010 4.834319229654355 2011 4.374474740544173 2012 3.0678430466614515 2013 4.552770014323343 2014 3.6154362392153416 2015 3.2553416651887233 2016 2.163648620398149 2017 4.22684353235752 2018 2.9461995368232863 2019 3.250723776374869 2020 2.6664889999875783 2021 4.638380892929277 2022 2.654958726791307 2023 3.513940469505215