According to the World Health Organization, there were sixteen cases of rubella reported in the United States in 2008, which is enough to make the United States rank rank seventy-fifth in that category. China ranks first, with 120,354 reported cases of rubella.
According to the World Resources Institute, there are 195 amphibian species endemic to the United States. That is enough to make the United States rank seventh in that category. Brazil ranks first, with 454 endemic amphibian species.
According to the World Resources Institute, in 2003 there were 662,000 mechanical agricultural harvesters in use in the United States, or 15.6% of the world’s total harvesters, which was enough to make the United States rank second in that category. Japan ranked first, with 1,042,000 harvesters, or 24.5% of the world’s mechanical harvesters.
According to the British Geological Survey, in 2007 the United States produced 700 tonnes of cadmium, which was enough to make the United States rank eighth in that category. China ranked first, producing 3800 tonnes.