Year annual % 1961 3.4296740146287448 1962 4.109158606257736 1963 4.405974199436471 1964 2.2093275018463885 1965 1.368998869709543 1966 -4.258290369720072 1967 3.075364050078093 1968 0.36886032865963614 1969 6.006174966247684 1970 9.723472587086277 1971 5.216124557060596 1972 -2.4876554021492865 1973 2.8845841948016044 1974 6.8525168322058505 1975 -12.431629021459727 1976 -3.530182806275363 1977 2.274107241699568 1978 8.475935602321712 1979 -2.514941419593015 1980 0.47169594317210795 1981 -3.503066946967053 1982 -6.92365041055389 1983 -4.563737504589454 1984 8.64756945671597 1985 5.091617272011376 1986 5.199160679748772 1987 4.7948988794078105 1988 5.628168763594573 1989 5.085872700138424 1990 3.32881788321653 1991 5.281826398344293 1992 3.879419080375172 1993 4.850000553794118 1994 3.299999739477471 1995 4.112418971628614 1996 4.602461155646267 1997 4.196357440195712 1998 4.700390784279108 1999 4.399996825452959 2000 3.7000000816440775 2001 4.0000001280791935 2002 4.499999559003314 2003 5.200000133101 2004 5.5999999907744495 2005 5.900003818551042 2006 6.399912606180337 2007 4.346819104400794 2008 9.14979893831817 2009 4.844487051750761 2010 7.899711940516212 2011 14.047123580314903 2012 9.2927894063005 2013 7.31252501678145 2014 2.8562401633088257 2015 2.120759338173343 2016 3.3734657496693643 2017 8.128894881009558 2018 6.200077681272845 2019 6.507774793915203 2020 0.5139416706281708 2021 5.076466435335419 2022 3.817504621095665 2023 2.9447858308222123