Type of retirement plan |
1985 |
1998 |
2002 |
2004 |
2005 |
2006 |
2007 |
2008 |
2009 |
Defined benefit |
90 |
90 |
83 |
74 |
63 |
58 |
54 |
49 |
45 |
Traditional |
89 |
67 |
49 |
40 |
34 |
30 |
28 |
24 |
22 |
Hybrid |
1 |
23 |
34 |
34 |
29 |
28 |
26 |
25 |
23 |
Defined contribution only |
10 |
10 |
17 |
26 |
37 |
42 |
46 |
51 |
55 |