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TABLE E22

Percentage Distribution of Active Participants in Multiemployer
Plans with 100 or More Participants

by vesting status, 1978-1997
Year All Plans Defined Benefit Plans Defined Contribution Plans
Total Fully
Vested
Partially
Vested
Not
Vested
Total Fully
Vested
Partially
Vested
Not
Vested
Total Fully
Vested
Partially
Vested
Not
Vested
1978 100 37 7 56 100 34 7 59 100 90 4 7
1979 100 38 7 55 100 35 7 59 100 90 4 7
1980 100 35 6 59 100 32 6 63 100 78 3 19
1981 100 41 6 53 100 36 6 57 100 88 3 9
1982 100 42 4 53 100 38 4 58 100 82 3 15
a
1983 100 47 4 48 100 42 5 54 100 86 3 11
1984 100 48 5 47 100 42 6 52 100 87 2 12
1985 100 51 3 46 100 45 4 52 100 89 2 9
1986 100 53 3 44 100 46 3 51 100 88 2 10
1987 100 53 4 43 100 45 3 52 100 86 6 9
a
1988 100 55 3 42 100 46 3 52 100 89 2 8
1989 100 54 2 44 100 45 2 53 100 86 2 12
1990 100 57 2 41 100 48 3 50 100 87 2 11
1991 100 57 3 40 100 47 3 50 100 88 2 11
1992 100 59 3 37 100 50 4 46 100 84 2 14
a
1993 100 61 3 36 100 52 3 45 100 85 3 12
1994 100 62 3 35 100 52 3 45 100 88 3 9
1995 100 63 2 35 100 53 2 45 100 89 2 9
1996 100 64 2 34 100 53 2 45 100 92 2 7
1997 100 64 2 34 100 53 2 45 100 90 2 8

SOURCE: Form 5500 series reports filed with the Internal Revenue Service for 1978-97 plan years.

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