Year annual % 1961 1.99944049933518 1962 2.54211212405058 1963 1.98658254381755 1964 2.09497226471195 1965 1.64950611738654 1966 1.79104763183873 1967 1.7852325973011 1968 0.877166546691753 1969 0.894787617931309 1970 1.35759226639106 1971 1.49375095882477 1972 1.76835888765716 1973 1.95737000018805 1974 2.08528859369898 1975 1.94543372701951 1976 0.884790065593746 1977 0.311361735807443 1978 0.032044092945716 1979 -0.39164121838523 1980 0.125363651321035 1981 0.384751508652698 1982 0.993480548336686 1983 1.3594947716689 1984 0.865186524752234 1985 0.617838918191614 1986 -0.0246404042272856 1987 0.861875993248055 1988 0.274482468222468 1989 0.480054396222279 1990 0.92322272881111 1992 1.04173538422176 1993 1.14023110662887 1994 1.32923733494336 1995 1.46436378746179 1996 1.58266192727998 1997 1.31235828649882 1998 0.887279888633483 1999 0.525484536213216 2000 0.587564086381346 2001 0.589286034969052 2002 1.73717486434422 2003 1.97355854434158 2004 1.48621908244575 2005 1.12877350967992 2006 1.21898486028427 2007 0.932407687512324 2008 0.848701402422591 2009 0.999728031208421 2010 1.1117260560215 2011 0.762479795105218 2012 0.548220797298334 2013 0.768347998194806 2014 1.66101200071152 2015 2.0360339086492 2016 2.24603210015584 2017 2.08872272281936 2018 1.79124016759035 2019 1.59115889619722 2020 2.20478869594563 2021 0.413665247040229 2022 0.115363946900346 2023 2.04836808947608