Year annual % 1961 1.6099714380081451 1962 0.396026870406871 1963 0.9153711084777711 1964 0.8622951397330638 1965 5.464557679544839 1966 2.7511976209561055 1967 2.832013293371375 1968 1.801431153331734 1969 0.8063102046541104 1970 12.516173690183336 1971 1.3267297015803479 1972 3.3990936192672905 1973 7.352615042685272 1974 9.42497991712456 1975 9.663879250826056 1976 11.533278991505156 1977 12.337917136961352 1978 9.54762169159649 1979 23.4998656373929 1980 12.430866517234591 1981 -2.198235381270834 1982 24.730858970585402 1983 12.711864406353783 1984 8.24745260848205 1985 11.576041762985923 1986 12.875171647217542 1987 12.469372536531395 1988 13.417554344496295 1989 19.137404849322223 1990 17.743051364244764 1991 16.125271175125633 1992 18.350780681307995 1993 8.429105388322682 1994 8.448871563887977 1995 11.399741499736038 1996 7.1076674485611875 1997 9.87627742790933 1998 2.377681489201791 1999 0.9194354183002247 2000 3.944406994382902 2001 1.8676998423894844 2002 3.165579066479424 2003 6.777493605962221 2004 11.669908341697848 2005 6.212729506877324 2006 7.359977730685657 2007 12.595739823934139 2008 12.20398446199286 2009 11.185542266724752 2010 10.106864629661857 2011 11.66297635176224 2012 19.482877469941215 2013 8.7126745748715 2014 11.247624503061758 2015 9.93088973044884 2016 6.24566313330115 2017 29.518479835016393 2018 21.174820816537903 2019 13.618095911779207 2020 6.176934097748955 2021 4.8471564324411816 2022 10.42578924357447 2023 24.80060953879051