Russia and the USA are different in quite a few way. One is GDP. Russia's was $2,057.3 trillion for 2014. The USA's was $17,416.25. Russia's population for the same year is 143 million. The USA's population for the same year is 318 million. Median income in the USA is $53K. Russia's 2014 avearge income per month was about $1,200.00 per month. Considering the drop of the ruble and the decline in their economy, that income will decline too.
See: http://www.themoscowtimes.com/business/article/salaries-in-moscow-rise-to-1200-per-month-as-wage-growth-slows/509472.html