Year annual % 1961 8.19460579513792 1962 8.933827799860046 1963 9.317125565984496 1964 9.03167020355338 1965 8.621521072671532 1966 4.719901487926044 1967 10.277516147039247 1968 8.779049540773727 1969 0.9583448602300475 1970 11.185062929442363 1971 13.955250883956019 1972 13.590393015284066 1973 10.175979221465283 1974 7.850727006109329 1975 10.178431672200688 1976 10.208308814875839 1977 12.034864563056438 1978 11.271007866993012 1979 9.792314098081002 1980 10.679325428294852 1981 12.06443468842821 1982 10.032206871638003 1983 8.271257590173507 1984 12.533321465586301 1985 8.293098837104083 1986 9.375452617662024 1987 4.064520291193568 1988 6.7909804529350515 1989 5.317363403324415 1990 2.67796315144365 1991 1.5005082218451338 1992 -0.15317022702968527 1993 0.5964286303399379 1994 0.4046689587591938 1995 6.869219209928692 1996 7.8654894547470695 1997 8.003497514446103 1998 9.601898068952801 1999 9.508532583145001 2000 8.110464485345016 2001 7.932796166005204 2002 4.452193305666599 2003 4.403693664369368 2004 5.7420457268568486 2005 8.073506121010421 2006 9.002823932466976 2007 11.713489381565413 2008 8.17510450082247 2009 5.512601154274815 2010 -2.7523399156636814 2011 6.68335521506315 2012 4.901693384474496 2013 4.501113513566256 2014 5.17839955418545 2015 3.1430397634812297 2016 3.8494317592481084 2017 4.801953963728774 2018 4.030420023611512 2019 8.391899020150568 2020 17.199506348148557 2021 16.856683365073767 2022 -0.8428025798645983 2023 1.776394991687209