| january 1980 - december 1979 |
3.18 % |
|
january 1980 - january 1979 |
20.59 % |
| february 1980 - january 1980 |
1.72 % |
|
february 1980 - february 1979 |
20.85 % |
| march 1980 - february 1980 |
1.05 % |
|
march 1980 - march 1979 |
20.50 % |
| april 1980 - march 1980 |
1.61 % |
|
april 1980 - april 1979 |
20.93 % |
| may 1980 - april 1980 |
1.02 % |
|
may 1980 - may 1979 |
20.84 % |
| june 1980 - may 1980 |
0.90 % |
|
june 1980 - june 1979 |
20.94 % |
| july 1980 - june 1980 |
1.78 % |
|
july 1980 - july 1979 |
22.03 % |
| august 1980 - july 1980 |
1.20 % |
|
august 1980 - august 1979 |
22.03 % |
| september 1980 - august 1980 |
2.00 % |
|
september 1980 - september 1979 |
21.35 % |
| october 1980 - september 1980 |
1.70 % |
|
october 1980 - october 1979 |
21.15 % |
| november 1980 - october 1980 |
2.08 % |
|
november 1980 - november 1979 |
21.98 % |
| december 1980 - november 1980 |
-0.22 % |
|
december 1980 - december 1979 |
19.55 % |