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TABLE E21

Percentage Distribution of Active Participants in Single Employer 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 47 12 40 100 41 5 53 100 57 25 18
1979 100 48 13 39 100 41 6 53 100 58 26 17
1980 100 47 14 39 100 40 6 54 100 58 25 17
1981 100 48 14 38 100 41 5 54 100 57 26 17
1982 100 49 14 36 100 42 5 53 100 59 25 17
a
1983 100 54 14 33 100 43 6 51 100 64 22 14
1984 100 56 14 30 100 44 6 50 100 67 20 13
1985 100 57 14 29 100 43 6 51 100 68 20 12
1986 100 58 14 28 100 44 6 50 100 70 19 11
1987 100 58 13 28 100 46 6 49 100 68 20 12
a
1988 100 60 12 28 100 50 4 46 100 68 19 13
1989 100 67 10 24 100 61 2 37 100 71 15 14
1990 100 68 9 23 100 62 2 36 100 72 14 14
1991 100 68 10 22 100 65 2 33 100 70 15 15
1992 100 69 10 21 100 67 2 32 100 70 15 15
a
1993 100 70 10 19 100 69 2 29 100 71 15 14
1994 100 71 10 19 100 71 1 28 100 71 14 15
1995 100 70 11 20 100 71 1 27 100 69 15 16
1996 100 72 12 16 100 72 1 27 100 72 17 11
1997 100 68 12 21 100 70 1 29 100 67 16 17

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

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