Yes, the only console showing sales growth over 2009 figures was Sony's PSP handheld. Over 2.5 million were sold in 2010 - over 60,000 more than 2009.
What drives the sales? Monster Hunter that's what.
Japanese hardware sales, 2010:
* PSP - 2,729,718
* DS - 2,719,544
* Wii - 1,592,563
* PS3 - 1,542,258
* Xbox 360 - 231,258
* PS2 - 83,030
Japanese software sales, 2010:
* Pokemon Black/Pokemon White - DS - 4,734,064
* Monster Hunter Portable 3rd - PSP - 3,163,750
* New Super Mario Bros. Wii - Wii - 1,692,401
* Wii Party - Wii - 1,385,541
* Dragon Quest VI - DS - 1,354,841
* Dragon Quest Monsters Joker 2 - DS - 1,305,750
* Tomodachi Collection - DS - 1,112,298
* Super Mario Galaxy 2 - Wii - 931,534
* Inazuma Eleven 3 Spark/Bomber - DS - 930,580
* Kingdom Hearts: Birth by Sleep - PSP - 844,980