How has the percentage of infants immunized against measles changed in these fifteen countries since 2000?

Goal 4: Reduce by Two Thirds, the Under 5 Mortality Rate

Percentage of Children 1 Years Old Immunised Against Measles From 2000-2011

Questions to Consider: 1. Is there a correlation between the size of the country and the rate of change? Why? 2. Why do you think the percentage of infants immunized against measles in Nauru, increase all the way to 99% while it started off as 7%.