Year annual % 1961 1.0322105118676923 1962 1.026732764880633 1963 1.0175011952432165 1964 1.0117542331068743 1965 1.0214447337041033 1966 1.0123233044570388 1967 1.0143583799697558 1968 1.0390027171719662 1969 1.0540749369100342 1970 1.0852568210941604 1971 1.0913567433540843 1972 1.1359487664658112 1973 1.237975076727618 1974 1.2872885055766252 1975 1.3053382103944222 1976 1.2966434075065068 1977 1.3386307860836257 1978 1.4119647317064281 1979 1.4633475502604698 1980 1.5344336301526336 1981 1.5527673409648703 1982 1.5330743345701798 1983 1.5239254740624657 1984 1.443994206235796 1985 1.2805580996179429 1986 1.0990719385626415 1987 0.9964184403535239 1988 1.143685012423745 1989 1.2620891512429349 1990 1.3789466627707077 1991 1.4196736042728682 1992 1.4524303155086982 1993 1.5032259229146196 1994 1.544332361861886 1995 1.5298177998732274 1996 1.4885019235384676 1997 1.5975403944836404 1998 1.7887529943708231 1999 1.793608295496493 2000 1.9217039121463757 2001 2.0124272937257914 2002 2.098406400752728 2003 2.145506430985607 2004 2.176524859987326 2005 2.193027884663917 2006 2.162893614035303 2007 2.1340259926693728 2008 2.0861246988586357 2009 2.033135777912299 2010 2.0090535590547036 2011 1.9769520317857587 2012 1.6442308682900333 2013 1.631342663838703 2014 1.8668034376462126 2015 1.8306411644153764 2016 1.861858012442156 2017 1.875057171182194 2018 1.8239505842876542 2019 1.7642964853453698 2020 1.7738931827192943 2021 1.7793051356709844 2022 1.7119373217278615 2023 1.6638497919520472