Year annual % 1973 3.295688647079899 1974 7.751442873700071 1975 4.4560373528076695 1976 7.727211553884402 1977 0.6755385630595327 1978 10.269531805349402 1979 7.067191527082954 1980 0.6418304727222335 1981 2.4421279569322394 1982 7.0655745804591135 1983 6.426355058377169 1984 6.59408072777137 1985 4.277875443130938 1986 0.9479085075183207 1987 -0.5490942701595714 1988 -2.1746628130518815 1989 4.936944608098685 1990 0.781517095734003 1991 -2.857930282095765 1992 3.0959958027593615 1993 -1.1443294566804525 1994 -1.4347531828447586 1995 2.9385153901226033 1996 3.990949294817156 1997 1.8604570272190841 1998 5.555306327029825 1999 2.7442050380040257 2000 2.83439194004616 2001 5.097475898812618 2002 4.627857488757712 2003 6.5897791761531295 2004 3.8735267111938754 2005 4.574425750111217 2006 3.4027232643134937 2007 5.840871498648312 2008 3.0438100762669933 2009 1.2133299344470316 2010 5.52734648784498 2011 2.1690071003282156 2012 2.1848424795543337 2013 1.8417162340540756 2014 3.8610973727246005 2015 3.1820594157224775 2016 5.398564000443301 2017 0.9766069338665915 2018 0.3518920941052954 2019 1.0400611370842086 2020 -4.573872104659799 2021 3.370906743345884 2022 2.8998050279899417 2023 5.273526576476641