Sales by U.S.companies were $28.9 billion in 2011, $29.5 billion in 2010 and $30.9 billion in 2009. This represents decreases of 1.8% in 2011, 4.7%in 2010 and 4.4%in 2009. Sales by international companies were $36.1 billion in 2011, $32.1 billion in 2010 and $31.0 billion in 2009. This represents an increase of 12.4%in 2011,an increase of 3.6%in 2010 and a decrease of 1.4%in 2009.