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1974
1
1975
to
1976
2
1977
to
1979
0
1980
to
1981
1
1982
to
1984
0
1985
to
1986
0
1987
to
1989
1
1990
to
1991
2
1992
to
1994
3
1995
to
1996
0
1997
to
1999
1
2000
to
2001
2