វិបត្តិជំនួយភូមិមហាសមុទ្រ
1981
1990
1978
1978
1990
1988
1987
1990
1965
1986
1983
1992
1991
1986
1990
1969.
1993
1986
1994
1991
1980
1992
1978
1985
1969
1990
1975
1988
១៩៩៣-០៤-២២
1998
1992
1982
1988
1996
1987
1984
1992
1978
1980
1981
1985
1982
1977
1992
1988
1991
1992
1984
1986
1992
1988
1981
1990
1990
1991
1983
១៩៧៥ ៧ ២៤
1990
១៩៨៨ ០២ ២៥
1993
1996
1982
1980
1992
1983
1961
1973
2001
1987
1987
1993
1992
1983
1988
1987
1985
1985
1986
1990
1995
1977
1987
1974
1994
1958
1980
1992
1957
1991
1993
1984
1992
1993
1985
1990
1992
1979
1968
1978
1990