Year annual % 1961 8.175200752586717 1962 8.215183673199718 1963 8.220484343320468 1964 8.231128005747145 1965 8.197642426509328 1966 8.17896303623768 1967 8.147914044156966 1968 8.121726549111747 1969 8.067330501173846 1970 8.027309761581451 1971 7.98799257651681 1972 7.958071841960068 1973 7.92258635581104 1974 8.452475352428412 1975 9.015874931835537 1976 9.247441460095013 1977 9.490398010005498 1978 9.620132826505621 1979 9.627970887162107 1980 9.559166798998332 1981 9.494285032773506 1982 9.459546081892817 1983 9.31091530254545 1984 9.05333731288131 1985 9.444874090230975 1986 9.664695276860158 1987 9.114458785913438 1988 8.644685028626258 1989 8.210806102856218 1990 7.817459448693214 1991 7.432525960782506 1992 7.047670371231958 1993 6.545265485206311 1994 3.8419172012133997 1995 1.7846595811865356 1996 1.6736976223704298 1997 1.5714450204591248 1998 1.4809362468707046 1999 1.4037091767563992 2000 1.3314829992730046 2001 1.2605007337689278 2002 1.186140675845448 2003 1.127790409321876 2004 1.9641776670178694 2005 2.6540778401250655 2006 2.5712719230509524 2007 2.5085861650757697 2008 2.47392941831475 2009 2.470798769428575 2010 7.3285659662911495 2011 12.03468575297966 2012 11.554648037822668 2013 9.335386203402832 2014 6.511175416034451 2015 5.943949572193629 2016 6.2078760742350845 2017 4.493601152153389 2018 2.4620547981092153 2019 1.0986602706482174 2020 -0.3280442581854621 2021 0.380309630186094 2022 2.03521269125806 2023 2.2148492917895273