Year annual % 1961 6.096726913161049 1962 4.198218037039922 1963 1.8966722406480017 1964 7.260946352366744 1965 5.57194994609975 1966 4.869474041740446 1967 4.273593070785765 1968 7.159571594694043 1969 6.756604139349193 1970 6.528901474663115 1971 6.877597722550561 1972 7.256223599308711 1973 8.13089381659087 1974 6.51770996725611 1975 3.6405110621865475 1976 5.4170545924516915 1977 4.757759842593174 1978 4.403277207312399 1979 7.457681326177507 1980 6.923128706885649 1981 0.9364808797547965 1982 -0.3391633376823364 1983 -2.469877306632995 1984 3.710475716793951 1985 3.1653875608615323 1986 3.529520324558405 1987 3.3691007338449026 1988 0.3831269499939225 1989 1.6368682624597426 1990 -0.24568434255964178 1991 3.295727518753182 1992 2.8097593542519803 1993 4.72172322961697 1994 5.321203131030572 1995 0.6905896411406616 1996 3.966782346532028 1997 5.452388320492602 1998 2.940198726511383 1999 0.4493681497737043 2000 3.583625152465146 2001 0.225615995773623 2002 0.42943221569341006 2003 2.5338273999862224 2004 5.345778339396844 2005 4.027456181282815 2006 5.23869344672066 2007 5.350299611613906 2008 3.8098452060601744 2009 -2.3298412569625953 2010 6.678853596884977 2011 4.568883149603863 2012 2.6406179298313646 2013 2.853071497689072 2014 1.398305550633097 2015 0.36625354600580806 2016 -0.336265482915195 2017 1.991241005673558 2018 1.6744724899993457 2019 0.7175673564003802 2020 -6.566986284278087 2021 7.200832128450756 2022 4.0075879934000795 2023 2.180328956374126