Agriculture and natural resources ranked No. 5 on a list of the highest-paying college degrees for 2015. The projected annual starting salary for a graduate in this field is $51,220, with lifetime earnings of $2.6 million, reports USA Today.

Engineering, computer science, math and sciences and business ranked ahead of agriculture on the list.

The Census Bureau reported that as of 2011, close to one out of every three people over 25 held a bachelor’s degree. As recently as 1998, less than one-quarter of people over 25 held a bachelor’s degree.