数据如下,还是要靠市场自身的规律了。
) J3 v# d. Q+ t7 V4 a) w# h+ I
' |( R; C8 _' V* \; g0 c; Y5 c19910701 -.520 @5 n' Z0 i. G" Z8 B
19920701 .25! [$ }2 r0 s N* @( P/ x
19930701 -.95" r' i0 O% k! _ u
19940701 -2.33
; \: k3 D( Y2 R! U+ x6 _% O. {5 o19960701 -5.36& R4 b" e, R/ a7 g* ?( L
19980701 -1.70
9 ?0 I. ~$ g6 T4 W2 u4 d19990701 -7.610 s" q6 b" M9 k, I3 o
20020701 -1.10% ~4 Y: t" \ k
20030701 -.09# y- U4 V& l2 h9 B
20040701 3.00: s! E( f+ S) z* R
20050701 -2.35
& T( A9 b5 Z' r/ V ~6 R20080701 -3.092 w- F6 ]2 C% M* A( [% f9 M& S
20090701 1.65
4 U t$ e6 O$ j! ^9 @1 ~- ~, e' [7 N20100701 -1.02
0 Z7 `( D- e: ^- i+ h20110701 -.10
% A7 ?2 N/ P4 l2 R20130701 .818 |1 ]% _/ B7 w5 P' M$ c, F3 B2 M- ]
20140701 .10 |