1991 183
1992 183
1993 183
1994 183
1995 183          1992 Coefficients in use
1991 283
1992 283
1993 283
1994 283
1995 283          1992 Coefficients in use
1991 383
1992 383
1993 383
1994 383
1995 383          1992 Coefficients in use
1991 483
1992 483
1993 483
1994 483
1995 483          1992 Coefficients in use
1991 583
1992 583
1993 583
1994 583
1995 583          1992 Coefficients in use
1991 683
1992 683
1993 683
1994 683
1995 683          1992 Coefficients in use
1991 783
1992 783
1993 783
1994 783
1995 783          1992 Coefficients in use
1991 883
1992 883
1993 883
1994 883
1995 883          1992 Coefficients in use
1991 983
1992 983
1993 983
1994 983
1995 983          1992 Coefficients in use
19911083
19921083
19931083
19941083
19951083          1992 Coefficients in use
19911183
19921183
19931183
19941183
19951183          1992 Coefficients in use
19911283
19921283
19931283
19941283
19951283          1992 Coefficients in use