Year annual % 1961 2.2865859333484053 1962 2.1867472650884565 1963 2.086510495673764 1964 2.0337992928511 1965 1.8897389148555988 1966 1.7958371611683361 1967 1.6922373427428141 1968 1.5844294957734206 1969 1.533231746180519 1970 1.5939480902735141 1971 1.5086904042845362 1972 1.0814762504320896 1973 0.9818131308159508 1974 0.9619530444624331 1975 1.0341538742381147 1976 0.9892145311352749 1977 1.0448308882805293 1978 1.074993403549442 1979 1.1156986376981592 1980 1.0596256260712948 1981 1.2054467690468869 1982 1.190136062782571 1983 1.1338621696720423 1984 1.0821971512707194 1985 1.09705114625109 1986 1.137913281665277 1987 1.1246252273817703 1988 1.1350265474217451 1989 1.2162461458659948 1990 1.4327683007124676 1991 1.825040785373261 1992 1.8875478590306898 1993 1.8080445136262426 1994 1.7155836733505794 1995 1.6685516575114718 1996 1.640687479158359 1997 1.6766981943250272 1998 1.6187869334760592 1999 1.593665895338603 2000 1.5125552528038781 2001 1.2496702581350263 2002 1.158317490484805 2003 1.0760721361825887 2004 1.1389294137190973 2005 1.1329995754005182 2006 1.1797094373599606 2007 1.1732466865854434 2008 1.178103671908076 2009 1.1193009300349388 2010 1.0700640193973072 2011 0.9667850318853368 2012 0.9725081389279069 2013 0.9376168950086452 2014 0.9730710476875117 2015 0.9554736868870606 2016 0.9849661115846118 2017 0.9140561008056096 2018 0.845341231892931 2019 0.7906241650273529 2020 1.220892186504102 2021 0.43668453000694285 2022 0.7588302193044996 2023 0.9953150673256346