1991 184
1992 184
1993 184
1994 184
1995 184          1992 Coefficients in use
1991 284
1992 284
1993 284
1994 284
1995 284          1992 Coefficients in use
1991 384
1992 384
1993 384
1994 384
1995 384          1992 Coefficients in use
1991 484
1992 484
1993 484
1994 484
1995 484          1992 Coefficients in use
1991 584
1992 584
1993 584
1994 584
1995 584          1992 Coefficients in use
1991 684
1992 684
1993 684
1994 684
1995 684          1992 Coefficients in use
1991 784
1992 784
1993 784
1994 784
1995 784          1992 Coefficients in use
1991 884
1992 884
1993 884
1994 884
1995 884          1992 Coefficients in use
1991 984
1992 984
1993 984
1994 984
1995 984          1992 Coefficients in use
19911084
19921084
19931084
19941084
19951084          1992 Coefficients in use
19911184
19921184
19931184
19941184
19951184          1992 Coefficients in use
19911284
19921284
19931284
19941284
19951284          1992 Coefficients in use