Year annual % 1961 -2.513713788245468 1962 4.140632683875083 1963 -5.387232992940341 1964 -3.8432040887701646 1965 3.7788080641188486 1966 -6.0837121874852755 1967 -1.1421256175292456 1968 -0.6639861089585821 1969 -1.2215048338049144 1970 3.1801259948041007 1971 -0.5903069559139738 1972 -7.861292574444917 1973 -2.4478486792190637 1974 7.624054205123329 1975 11.443714300335998 1976 12.365325591463645 1977 2.2557323144675223 1978 -9.505555191509217 1979 -8.635506989719843 1980 -2.3670817376120112 1981 3.314968476210794 1982 2.06062987045037 1983 -1.0543281894603496 1984 -7.136380657586159 1985 -8.042495129704037 1986 3.353295403126694 1987 12.324104604398627 1988 -0.9004894681595488 1989 8.260296831566123 1990 -6.993142238883735 1991 5.5535891654375575 1992 4.91909976353368 1993 2.859125045290355 1994 -1.4061456546640727 1995 3.2310071670746936 1996 3.372088269126124 1997 15.372419384088957 1998 1.9839501878598185 1999 0.62925959081781 2000 3.298179140447118 2001 3.534626661349094 2002 3.1758315969374564 2003 3.494451685030242 2004 2.327351126763503 2005 2.6489481233194994 2006 3.3121959081481123 2007 2.4077757883645035 2008 0.5955425247661026 2009 -5.737535577429242 2010 0.8062137624624626 2011 6.364974079288572 2012 -6.662419423872464 2013 -0.3986759640292661 2014 1.7974671592001101 2015 -1.2079980615544912 2016 0.29878369001971805 2017 -2.5156863868962063 2018 -5.737812283629069 2019 -4.968250701750179 2020 -6.250228079067412 2021 -4.483619625633196 2022 -3.5249676630864286