| january 1998 - december 1997 |
7.17 % |
|
january 1998 - january 1997 |
16.25 % |
| february 1998 - january 1998 |
12.67 % |
|
february 1998 - february 1997 |
29.99 % |
| march 1998 - february 1998 |
5.27 % |
|
march 1998 - march 1997 |
36.80 % |
| april 1998 - march 1998 |
4.70 % |
|
april 1998 - april 1997 |
42.65 % |
| may 1998 - april 1998 |
5.24 % |
|
may 1998 - may 1997 |
49.67 % |
| june 1998 - may 1998 |
4.64 % |
|
june 1998 - june 1997 |
56.67 % |
| july 1998 - june 1998 |
8.56 % |
|
july 1998 - july 1997 |
68.72 % |
| august 1998 - july 1998 |
6.30 % |
|
august 1998 - august 1997 |
77.72 % |
| september 1998 - august 1998 |
3.75 % |
|
september 1998 - september 1997 |
82.40 % |
| october 1998 - september 1998 |
-0.27 % |
|
october 1998 - october 1997 |
79.41 % |
| november 1998 - october 1998 |
0.08 % |
|
november 1998 - november 1997 |
78.15 % |
| december 1998 - november 1998 |
1.42 % |
|
december 1998 - december 1997 |
77.63 % |