Year annual % 1961 3.2220177454810255 1962 -0.07557197331937004 1963 1.790183728721658 1964 3.288161762792427 1965 2.9798377319909974 1966 2.6838955101631967 1967 4.867795959661407 1968 2.252601626849284 1969 4.753188849667822 1970 5.132597231237597 1971 5.186266924795575 1972 6.189066589791551 1973 8.982314550488042 1974 16.380069819952453 1975 16.489308742291087 1976 14.019695458172095 1977 11.417653507047461 1978 8.237521355253818 1979 8.633629311291145 1980 10.016743401928707 1981 9.525083463001735 1982 11.708979121761544 1983 10.158408026203361 1984 7.862706325157092 1985 4.680506473051025 1986 6.548474726331293 1987 7.0271048715089535 1988 7.179787084911354 1989 9.228228670551843 1990 6.092179346705137 1991 3.019084964135857 1992 1.480173222755667 1993 0.8692289636234278 1994 1.0199854053209094 1995 2.2931775609939393 1996 2.7113973051305464 1997 1.272847223775429 1998 1.1356061264412318 1999 0.4754010129851167 2000 2.5507505804989137 2001 4.630718239720636 2002 2.8403068937699487 2003 2.985619736438892 2004 3.2322627997321405 2005 3.8255091270901858 2006 5.115388740132772 2007 4.985979934951132 2008 4.569822249378944 2009 4.949160757119955 2010 1.1518588177623457 2011 6.20209860660222 2012 1.805164061227444 2013 -0.16378151086239257 2014 1.4048930983807253 2015 -0.6229212488905347 2016 -0.6557718973833886 2017 3.651232808813077 2018 1.878810434990811 2019 3.463722736022021 2020 2.1138254414269113 2021 3.078774163956325 2022 7.123075722592873 2023 6.557375685114167