How does your major affect your earnings?

The "Earnings over time" tab in the MyFloridaFuture tool contains the median earnings by major for graduates of the public colleges and universities in Florida. It reports three medians, one year after graduation, five years after graduation, and ten years after graduation. It reports medians by school and for all schools overall. A table with the values for all schools overall for selected majors follows below. Here are three observatiions.

1. Engineering is the most lucrative major. 
2. Economics majors do well compared to what some students may view as "close substitutes". 
3. The increase in income between year 1 and 10 is higher in economics than in the "close substitutes".