Year annual % 1961 5.064449087864475 1962 3.1099590685684575 1963 -0.2641190254735477 1964 4.42103332668367 1965 2.7524317131867804 1966 0.18837671387154842 1967 23.629185081942737 1968 5.750729916292059 1969 5.301961401866961 1970 7.8840033593083945 1971 3.4401246860209085 1972 7.9763834574840615 1973 6.529533039752948 1974 10.656092861306604 1975 5.990072824354627 1976 19.674443513324206 1977 5.884773833660546 1978 3.409806634348996 1979 12.85276675004765 1980 14.245894646192127 1981 8.800193826331508 1982 12.481951453096357 1983 12.763071930470034 1984 13.552191792170689 1985 11.187127883431785 1986 0.17923568387799094 1987 -2.392309146321651 1988 0.8138986653593037 1989 -1.819083163379787 1990 1.6430984309149466 1991 3.568713529573614 1992 -1.2776710293542664 1993 55.7553793703876 1994 5.882472347036028 1995 6.634514037108843 1996 0.410559080515867 1997 6.163811054507789 1998 1.065869878260301 1999 2.187788500651749 2000 1.5315629586796433 2001 2.4693589147144763 2002 2.774492849538973 2003 1.9529144491334165 2004 0.13948783480724103 2005 1.3571419590405327 2006 2.2996749778616277 2007 0.49070803470594626 2008 4.9405368116780295 2009 3.6035151841818873 2010 0.6881870827776453 2011 2.589044247478938 2012 1.9422853638882316 2013 3.053459169250374 2014 2.0142126302225734 2015 0.30979167778053807 2016 0.6618089771558857 2017 1.0251411606625283 2018 1.8969916226624832 2019 1.169771819115411 2020 0.7055720376217209 2021 2.878931617417038 2022 5.336612004583515 2023 2.726009550640171