Year annual % 1961 6.378832475573844 1962 5.6668221727180565 1963 0.6370212342023933 1964 9.26993821451785 1965 4.555254814071148 1966 2.740910109032342 1967 5.530369994767838 1968 5.553076641764832 1969 6.509248406769913 1970 1.5968417468376117 1971 3.0049955742173893 1972 3.929385341160611 1973 4.092946092067251 1974 -1.122394250360756 1975 -1.4566449360145555 1976 5.924606186896739 1977 1.8702910303357072 1978 2.226308540428093 1979 3.8691114826421114 1980 -0.482986336653326 1981 -0.6661241555816986 1982 3.684572967633642 1983 2.5960719192376587 1984 4.166137922844442 1985 4.003751815159333 1986 4.904178354990421 1987 0.25426631463372473 1988 -0.013601205280096451 1989 0.6451874319766375 1990 1.4752442765040996 1991 1.39363399746793 1992 1.9570067118385595 1993 0.01068763082683688 1994 5.332462711553077 1995 3.0275872672532955 1996 2.9000997687400627 1997 3.26089015774798 1998 2.2181587422376055 1999 2.948022160639013 2000 3.7468625954019785 2001 0.8231529980144359 2002 0.46634557149423017 2003 0.39005855648510135 2004 2.66821926741747 2005 2.3366413082194697 2006 3.9130079783106027 2007 0.9092389283023721 2008 -0.512016744849106 2009 -4.90654772965155 2010 1.8709911471849665 2011 1.3367777669032819 2012 0.22649979180296498 2013 0.9333409723712265 2014 1.619393811030335 2015 2.3425911075704704 2016 3.2459569852439643 2017 2.8217363412902614 2018 1.9895373149643234 2019 1.4934869585364794 2020 -2.4245126786193794 2021 6.844521901834426 2022 2.7311744542143117 2023 1.8896103859120217