According to the World Bank, in 2007 there were 257.6 tractors per 100 square kilometers of arable land in the United States, which is enough to make the United States rank sixtieth in the world in that category. Iceland ranks first, with 16,290.0 tractors per 100 square kilometers of arable land.
According to the OECD, the United States had a tertiary (college and university) graduation rate of 36.5% in 2007. This rate was high enough to allow the United States to rank fifteenth out of 30 countries in this category. Iceland ranks first in this category with a tertiary graduation rate of 63.1%.
Entry prepared by Sean Fishel.
According to UNESCO, Americans attended cinemas an average of 4.8 times in 2006, making the United States rank third in that category. Iceland ranks first, with a cinema attendance frequency of 5.o per capita.