In their first week on the Oricon music charts, Sakamoto Maaya's Triangular (Macross F OP) came in at #3, while Hirano Aya's unnamed world (Nijuumensou no Musume ED) was #20.
Here is a list, from 2channel, of the placing of various anime-related songs on the charts over the past week, with sales figures:
#3 Triangular - Sakamoto Maaya (Macross F OP, 31,270)
#20 unnamed world - Hirano Aya (Nijuumensou no Musume ED, 7808)
#22 Sakura Amaneku Sekai - yozuka (Da Capo 2 SS OP, 7396)
#26 Dear Prince - Ikemen Samurai (Prince of Tennis tie-in, 6527)
#31 Bokutachi no Yukue - CooRie (Da Capo 2 SS ED, 5160)
#36 Love Jump - Kuribayashi Minami (Kurenai OP, 4166)
#39 Koi no Honoo - Sakakibara Yui (Kanokon ED, 3689)
#43 Phosphor - Miyazaki Ui (Kanokon OP, 3096)
#48 Chousai Kenbo Sengen - MOSAIC.WAV (Kyouran Kazoku Nikki OP, 2732)
Hirano's, Sakakibara Yui's, and MOSAIC.WAV's are the songs that I personally enjoy most, at the moment. The anti-Hirano people once again are posting on 2channel that she's finished and that her fans are crying because she didn't get into the top ten. The more things change, the more they stay the same.
But as I have been saying for the past year and a half, she is making one last attempt to be an idol/personality/singing star and it may work and it may not. I don't know what level of sales is acceptable to her backers. I love her recent music, but it doesn't seem geared to the market. Her second idol DVD just came out this week, too. I don't have sales figures for that, yet. She has at least got her face on TV quite a bit over the past few months, and I suspect she is getting comparatively good money for her seiyuu work these days. From what I can gather from her blog, at least she is making enough that, at 20, she no longer lives at home.