SQL Grouping cube and pivot - sql

Question

I'm trying to do the following query where I obtain a table grouping by years, month and sites, and then I pivot this sites to columns:
SELECT * FROM
(
SELECT
DECODE(GROUPING(TO_CHAR(TM.TIMESTAMP,'YYYY'))
,0, TO_CHAR(TM.TIMESTAMP,'YYYY')
,1, 'TOTAL') AS "YEAR",
DECODE(GROUPING(TO_CHAR(TM.TIMESTAMP,'MM'))
,0, TO_CHAR(TM.TIMESTAMP,'MM')
,1, 'TOTAL') AS "MONTH",
DECODE(GROUPING(TS.CODIGO5)
,0, TS.CODIGO5
,1, 'TOTAL') AS BU,
SUM(TM.KWHGEN) AS GEN
FROM T_MEDIDAS_CO TM
JOIN T_Sede TS ON TM.id_sede=TS.id_sede
WHERE TO_CHAR(TM.TIMESTAMP,'YYYY') IN (2015,2014)
AND TS.CODIGO5 IN ('FINSI', 'FINOC')
GROUP BY CUBE (TO_CHAR(TM.TIMESTAMP,'YYYY'), TO_CHAR(TM.TIMESTAMP,'MM'), TS.CODIGO5)
ORDER BY TO_CHAR(TM.TIMESTAMP,'YYYY') DESC, TO_CHAR(TM.TIMESTAMP,'MM') DESC, 3
)
PIVOT
(
SUM(GEN)
FOR BU IN ('FINCI' AS FINCI,'FINSI' AS FINSI, 'FINOC' AS FINOC, 'TOTAL' AS TOTAL)
)
ORDER BY "YEAR" DESC, "MONTH" DESC
to obtain this result
YEAR MONTH FINCI FINOC TOTAL
2015 12 110376,17 109991,55 220367,72
2015 11 92032,56 97938,09 189970,65
2015 10 77668,67 79273,98 156942,65
2015 09 87079,46 91203,73 178283,19
2015 08 99992,38 100220,24 200212,62
2015 07 142430 133979,74 276409,74
2015 06 107006,73 104320,96 211327,69
2015 05 86264 90985,62 177249,62
2015 04 85838,41 87147,74 172986,15
2015 03 106178,39 106342,4 212520,79
2015 02 125007,65 122790,76 247798,41
2015 01 134934,67 135897,7 270832,37
2015 TOTAL 1254809,09 1260092,51 2514901,6
2014 12 121185,25 122014,9 243200,15
2014 11 94682,9 94221,47 188904,37
2014 10 87212,59 92222,92 179435,51
2014 09 97306,19 100701,93 198008,12
2014 08 97738,26 101901,88 199640,14
2014 07 113242,07 117496,84 230738,91
2014 06 98234,69 98092,2 196326,89
2014 05 91202,74 102214,94 193417,68
2014 04 88517,65 103756,83 192274,48
2014 03 107541,53 119236,48 226778,01
2014 02 127880,75 131451,38 259332,13
2014 01 141381,35 143836,44 285217,79
2014 TOTAL 1266125,97 1327148,21 2593274,18
TOTAL 12 231561,42 232006,45 463567,87
TOTAL 11 186715,46 192159,56 378875,02
TOTAL 10 164881,26 171496,9 336378,16
TOTAL 09 184385,65 191905,66 376291,31
TOTAL 08 197730,64 202122,12 399852,76
TOTAL 07 255672,07 251476,58 507148,65
TOTAL 06 205241,42 202413,16 407654,58
TOTAL 05 177466,74 193200,56 370667,3
TOTAL 04 174356,06 190904,57 365260,63
TOTAL 03 213719,92 225578,88 439298,8
TOTAL 02 252888,4 254242,14 507130,54
TOTAL 01 276316,02 279734,14 556050,16
TOTAL TOTAL 2520935,06 2587240,72 5108175,78
But, I don't need the TOTAL | MONTH rows, how can I fix it?
Thanks a lot