Year annual % 1971 12.653717386073154 1972 11.344759748281305 1973 5.5670801760862645 1974 4.944554681907903 1975 0.2589003490453905 1976 2.2701902768702524 1977 2.7087412362854195 1978 2.350387480274364 1979 6.085548010383619 1980 -1.0224844654789393 1981 6.530919655232736 1982 4.481413082118095 1983 5.927250198282351 1984 -4.1022649036379875 1985 1.2937942261548585 1986 8.749123770207973 1987 7.783103530617268 1988 6.221320191028184 1989 -0.45947472963004543 1990 9.099676933276427 1991 10.582658480057745 1992 7.6057999046567915 1993 4.304502966489139 1994 7.106594821977794 1995 6.336889095938886 1996 6.379028833443812 1997 4.505444684761855 1998 4.960843995246478 1999 2.9835281975470593 2000 5.532698127072862 2001 2.240932984096517 2002 0.14190235367121318 2003 0.7355168951031601 2004 4.392786834090103 2005 5.693659559243102 2006 5.7049771859119005 2007 5.537879660312001 2008 0.5276780673157049 2009 3.065411858556601 2010 5.367013289775031 2011 4.886017128336732 2012 2.215072611593328 2013 5.38788784694006 2014 5.634856236820852 2015 4.333398478541909 2016 5.283665871977334 2017 4.660621753921504 2018 3.848343549027632 2019 4.7048292694503 2020 -1.1696273228672567 2021 9.378708338709288 2022 7.326807177037551