Year annual % 1961 2.173034517267029 1962 2.0845135439068074 1963 2.080160174137502 1964 2.068062840697221 1965 2.001625982381689 1966 1.9151483576402142 1967 1.8890420797305394 1968 1.9273202238808838 1969 1.9597875151136213 1970 1.9637275835619588 1971 1.9287065562659023 1972 1.8141246046674115 1973 1.8336339064952023 1974 1.8313173230160948 1975 1.8059269470887505 1976 1.7695342613874727 1977 1.7618301844395607 1978 1.7591922315979316 1979 1.762546126908485 1980 1.7915943382834805 1981 1.8602164363412732 1982 1.960028163612333 1983 1.9543748863717962 1984 1.9548762840481042 1985 1.9382109106422716 1986 1.9215030637622315 1987 1.8948598003086399 1988 1.8645245731850901 1989 1.845756969794305 1990 1.8166303237543147 1991 1.791145932078726 1992 1.7964126361402246 1993 1.7677763399916397 1994 1.7386497539113521 1995 1.7088662288431096 1996 1.6648945876083283 1997 1.6305277950914538 1998 1.5966125749896964 1999 1.556160698490881 2000 1.526766895854652 2001 1.46083674520266 2002 1.3234793615879825 2003 1.2661165086037076 2004 1.2083301789751837 2005 1.1360677215552315 2006 1.051205933379572 2007 0.9867408741114586 2008 0.9361483472963036 2009 0.9011351621975429 2010 0.882227127882411 2011 0.859388098356134 2012 0.809906220369782 2013 0.7563450493714083 2014 0.6784677114130212 2015 0.6048762492258389 2016 0.5807516729502026 2017 0.528079622185998 2018 0.43783134695714554 2019 0.3530546525204032 2020 0.25997603528343843 2021 0.07698406975427018 2022 -0.06379521971658526 2023 0.03484057644283517