| january 1980 - december 1979 |
2.13 % |
|
january 1980 - january 1979 |
38.77 % |
| february 1980 - january 1980 |
1.83 % |
|
february 1980 - february 1979 |
39.04 % |
| march 1980 - february 1980 |
2.94 % |
|
march 1980 - march 1979 |
39.22 % |
| april 1980 - march 1980 |
2.54 % |
|
april 1980 - april 1979 |
39.14 % |
| may 1980 - april 1980 |
2.32 % |
|
may 1980 - may 1979 |
38.86 % |
| june 1980 - may 1980 |
1.91 % |
|
june 1980 - june 1979 |
38.05 % |
| july 1980 - june 1980 |
2.03 % |
|
july 1980 - july 1979 |
35.94 % |
| august 1980 - july 1980 |
2.20 % |
|
august 1980 - august 1979 |
32.66 % |
| september 1980 - august 1980 |
2.13 % |
|
september 1980 - september 1979 |
30.37 % |
| october 1980 - september 1980 |
2.92 % |
|
october 1980 - october 1979 |
31.00 % |
| november 1980 - october 1980 |
2.63 % |
|
november 1980 - november 1979 |
31.62 % |
| december 1980 - november 1980 |
1.93 % |
|
december 1980 - december 1979 |
31.24 % |