((
2000 11 24 2003 12 31 3122 94 2332 508
26
a
()
()
i
ii iii iv (i)
(ii)
(i) (ii) (iii) (iv)
(a) (b)(c)(d)
a)
/
(i) (ii) (iii) (iv)
1996 7 1996 12 1997 3 1997 3 2002 3 31 2000 12 1999 7 2001 5
1993 1985 57.5 36.6 25 24.5 67.9 25 29 25.6 67.4 30 34 32.6 61.2 35 39 40.6 54.3 40 44 46.2 49.2 45 49 51.7 42.2 50 54 58.4 35.1 55 59 65.6 27.7 60 64 71.0 23.1 65 69 73.9 21.2 70 74 76.9 16.9 75 79 78.1 15.8 80 79.4 14.1 60 65.6 30.3