Year annual % 1966 7.008143127019579 1967 4.022405938033529 1968 4.760261057435471 1969 11.001305701050583 1970 11.318648874195361 1971 7.512884311193545 1972 7.764086396432646 1973 6.564977408779129 1974 12.628271025281805 1975 7.112224001992516 1976 6.541881327263454 1977 5.86721749013752 1978 -15.510903514893855 1979 35.057553301573506 1980 12.59887241077449 1981 13.744349701752753 1982 9.843471407486007 1983 7.769065944005902 1984 8.839672199566095 1985 5.650584355914262 1986 9.422900668220564 1987 1.7028848476718537 1988 2.5592402282271394 1989 1.7184319395283438 1990 -4.635603931443271 1991 3.6304090564724305 1992 2.84171596705869 1993 2.715282869344236 1994 2.8916937144723533 1995 1.3315310086915844 1996 1.4222781066408459 1997 2.0584562468519465 1998 12.831213235837424 1999 6.115016905275311 2000 5.961720448160861 2018 -0.7744278077999098 2019 2.434077081169164 2020 0.43012498037384717 2021 4.827643129496039 2022 3.84571494150525