Year annual % growth 1966 2.2832461616774253 1967 1.2664201797202566 1968 1.8773047192991186 1969 1.1348405776827661 1970 4.161078640713285 1971 5.825235327902419 1972 0.6882525399126109 1973 4.012984548740931 1974 2.5077163093582016 1975 1.950455658979351 1976 1.0238279501967753 1977 7.745598499780513 1978 6.055112390104696 1979 -2.162393165184369 1980 7.1748056357947405 1981 7.802115924217333 1982 -2.2378090003450666 1983 2.0130474986383717 1984 1.4799329375437082 1985 3.0457549284085275 1986 -1.2781105719762138 1987 1.2673200801437616 1988 -3.372376924051565 1989 -1.3616523477084144 1990 7.180141275099345 1991 2.27122868334682 1992 -2.1615151346747297 1993 5.084116517404837 1994 -0.1740875968487643 1995 1.2201855858744608 1996 3.8042787185484457 1997 -0.05141254668376405 1998 3.2064854006922587 1999 1.2319798916348645 2000 1.1309341875399355 2001 5.205479735387868 2002 -1.1304354369361391 2003 3.7082687125638216 2004 2.50441208026713 2005 -3.088686580958793 2006 6.005004240428448 2007 4.365687507051192 2008 0.7965274720037598 2009 -2.780769607124469 2010 2.4203875258792493 2011 -2.4199744240743257 2012 6.054411679037727 2013 3.0151581126914664 2014 3.155255519638885 2015 1.8528802673497324 2016 2.915397233393662 2017 3.2677932325090495 2018 2.4593270178437194 2019 0.29881958150839694 2020 1.1198553774340212 2021 2.3157810545053223 2022 1.5943503040615212 2023 1.922550935739224