Year annual % 1961 4.688668546946204 1962 5.847863243364728 1963 5.44729290567642 1964 6.251799366154103 1965 7.9081276075716005 1966 4.86574897554199 1967 8.228805391303354 1968 9.342101837828494 1969 3.041293054116892 1970 10.085183477803824 1971 7.084085469245721 1972 8.182479646381879 1973 11.166280448748097 1974 -0.2581662023119691 1975 -7.9146073695149965 1976 3.902712673923972 1977 4.48728789500403 1978 1.7125897264002958 1979 4.512543382655721 1980 3.46437111345503 1981 0.7408021973298133 1982 1.5128933966638556 1983 -0.6352026109281184 1984 -2.256578076072657 1985 2.5266049361 1986 4.046278629899348 1987 6.410062930478006 1988 7.600903458702433 1989 6.596071298177122 1990 4.177328417182878 1991 4.609033560541832 1992 1.1681032968968879 1993 -2.163020612399322 1994 0.6935173913615671 1995 3.922373597934154 1996 3.1158057663207757 1997 3.9357979572653363 1998 4.279611056572065 1999 3.3205092588992784 2000 3.0890540479514357 2001 1.2272634226526975 2002 0.22054248819860334 2003 -1.301742085920793 2004 1.5456201021614362 2005 0.5950387180904784 2006 1.4419364129667258 2007 2.3055521127716077 2008 0.17470055493622283 2009 -3.2143899672230845 2010 1.6909284148323138 2011 -1.5514683167247796 2012 -3.667531415669373 2013 -0.3773982487910672 2014 1.3371199674465402 2015 2.2144828853083 2016 2.341823215937751 2017 3.7590943888776707 2018 3.0141237296509757 2019 2.658392605570853 2020 -8.396855009531663 2021 5.076695013820995 2022 6.336223762669874 2023 1.137700537188664