TOKYO, JAPAN - FEBRUARY 20:  Luxury brand boutiques are seen in Tokyo's shopping district of Omotesando as Japanese Prime Minister Yoshihiko Noda's cabinet prepare to double sales tax over 3 years on February 20, 2012 in Tokyo, Japan. Noda proposes raising the current 5 per cent sales tax to 8 per cent by April 2014, and then 10 per cent by 2015, to combat Japan's national debt, which is more than twice the size of the economy and the highest amongst rich nations.  (Photo by Adam Pretty/Getty Images)