Maybe it is just an exchange rate conversion like they did recently in Canada.
According to bankofcanada.ca, the US$ has dropped almost 20% (19.55%) against the Russian Rubble between december 2005 to march 2008.
1US$ 2005 = 28.74 R RUB 2005
1US$ 2008 = 24.04 R RUB 2008
http://bankofcanada.ca/en/rates/exchange-look.html







