20172016201520142013
United States70.0%70.5%71.6%68.8%67.8%
Japan10.6%10.3%9.2%10.3%11.9%
Germany10.2%10.0%9.6%11.0%11.3%
UK7.3%7.5%8.2%8.3%7.6%
Italy1.8%1.7%1.4%1.6%1.5%