Not surprise. They're too big in Japan
list of #1 from 2000-2011
Quote:
2000. Ayumi Hamasaki 21.76 billion yen 2001. Ayumi Hamasaki 24.38 billion yen
2002. Utada Hikaru 13.35 billion yen
2003. Ayumi Hamasaki 11.8 billion yen
2004. Utada Hikaru 8.66 billion yen
2005. Orange Orange 14.35 billion yen
2006. Koda Kumi 12.7 billion yen
2007. Koda Kumi 7.35 billion yen
2008. EXILE 19.58 billion yen
2009. Arashi 14.6 billion yen
2010. Arashi 17.16 billion yen
2011. AKB48 16.28 billion yen