Year annual % 1971 7.113382644475166 1972 5.227698038560774 1973 16.255284612757364 1974 12.989661792229938 1975 9.460989246830366 1976 9.172109716602165 1977 8.896350292605334 1978 11.856019654366719 1979 9.174434173277618 1980 -8.902236225606032 1981 1.3434841021047816 1982 3.9004849251528526 1983 17.798913043478265 1984 0.8242787560884182 1985 9.52111613876319 1986 7.782970940865681 1987 6.096866096866108 1988 -3.9634146341463463 1989 5.6928034371643434 1990 4.079254079254085 1991 19.448384554767543 1992 28.121116258049938 1993 3.5714285714285836 1994 3.8810006761325297 1995 -1.8012422360248337 1996 11.827956989247298 1997 2.672750977835719 1998 5.993357487922708 1999 4.8283720267767904 2000 0.6746031746031917 2001 0.876858558902029 2002 7.7572964669738695 2003 9.004514136374468 2004 -3.5268785268785336 2005 3.789038579301888 2006 -5.641025641025649 2007 7.432635480316534 2008 9.324009324009324 2009 2.332361516034979 2010 -1.0101010101010246 2011 1.9512195121951237 2012 -0.5578462284744177 2013 -2.675965665236049 2014 4.86984024004542 2015 3.072654403452873 2016 1.6743151161173557 2017 1.0914556026411901 2018 3.99854350151341 2019 -3.514376996805126 2020 4.516129032258064 2021 9.306883540315795 2022 -2.4638218923933266 2023 3.266596417281349