| january 1998 - december 1997 |
-0.38 % |
|
january 1998 - january 1997 |
0.57 % |
| february 1998 - january 1998 |
0.41 % |
|
february 1998 - february 1997 |
0.74 % |
| march 1998 - february 1998 |
0.17 % |
|
march 1998 - march 1997 |
0.82 % |
| april 1998 - march 1998 |
0.24 % |
|
april 1998 - april 1997 |
1.04 % |
| may 1998 - april 1998 |
0.04 % |
|
may 1998 - may 1997 |
0.94 % |
| june 1998 - may 1998 |
0.10 % |
|
june 1998 - june 1997 |
1.05 % |
| july 1998 - june 1998 |
-0.40 % |
|
july 1998 - july 1997 |
0.79 % |
| august 1998 - july 1998 |
0.16 % |
|
august 1998 - august 1997 |
0.66 % |
| september 1998 - august 1998 |
0.05 % |
|
september 1998 - september 1997 |
0.53 % |
| october 1998 - september 1998 |
-0.12 % |
|
october 1998 - october 1997 |
0.47 % |
| november 1998 - october 1998 |
-0.07 % |
|
november 1998 - november 1997 |
0.24 % |
| december 1998 - november 1998 |
0.07 % |
|
december 1998 - december 1997 |
0.26 % |