| january 1968 - december 1967 |
2.85 % |
|
january 1968 - january 1967 |
11.69 % |
| february 1968 - january 1968 |
-1.44 % |
|
february 1968 - february 1967 |
9.49 % |
| march 1968 - february 1968 |
-1.83 % |
|
march 1968 - march 1967 |
6.49 % |
| april 1968 - march 1968 |
0.50 % |
|
april 1968 - april 1967 |
5.90 % |
| may 1968 - april 1968 |
-0.87 % |
|
may 1968 - may 1967 |
2.96 % |
| june 1968 - may 1968 |
0.87 % |
|
june 1968 - june 1967 |
1.38 % |
| july 1968 - june 1968 |
-0.50 % |
|
july 1968 - july 1967 |
0.00 % |
| august 1968 - july 1968 |
2.24 % |
|
august 1968 - august 1967 |
1.23 % |
| september 1968 - august 1968 |
0.61 % |
|
september 1968 - september 1967 |
2.35 % |
| october 1968 - september 1968 |
0.48 % |
|
october 1968 - october 1967 |
1.47 % |
| november 1968 - october 1968 |
-2.17 % |
|
november 1968 - november 1967 |
-0.37 % |
| december 1968 - november 1968 |
-2.83 % |
|
december 1968 - december 1967 |
-2.23 % |