| january 1998 - december 1997 |
-0.31 % |
|
january 1998 - january 1997 |
0.61 % |
| february 1998 - january 1998 |
0.37 % |
|
february 1998 - february 1997 |
0.77 % |
| march 1998 - february 1998 |
0.17 % |
|
march 1998 - march 1997 |
0.86 % |
| april 1998 - march 1998 |
0.20 % |
|
april 1998 - april 1997 |
1.03 % |
| may 1998 - april 1998 |
0.03 % |
|
may 1998 - may 1997 |
0.91 % |
| june 1998 - may 1998 |
0.08 % |
|
june 1998 - june 1997 |
1.02 % |
| july 1998 - june 1998 |
-0.33 % |
|
july 1998 - july 1997 |
0.81 % |
| august 1998 - july 1998 |
0.06 % |
|
august 1998 - august 1997 |
0.62 % |
| september 1998 - august 1998 |
-0.04 % |
|
september 1998 - september 1997 |
0.40 % |
| october 1998 - september 1998 |
-0.05 % |
|
october 1998 - october 1997 |
0.40 % |
| november 1998 - october 1998 |
-0.06 % |
|
november 1998 - november 1997 |
0.17 % |
| december 1998 - november 1998 |
0.10 % |
|
december 1998 - december 1997 |
0.22 % |