Annual pay averages $84,000; the increase just matches inflation. Not all of the numbers are heartening, though.
Columbia University pays its Professors the most (more than 200 K per anum) and its the only university in the top 60 which pays its instructors a great deal of respect, even more than Assistant Professors in terms of salary an instructor draws more than Assistant Professor’s and only at Columbia University. No other University including Chicago, Harvard, Cal-Tech. Princeton have this privilege towards their instructors, they pay about 50-75% what they pay to their Asst Professors. caltech; instructor Asst Professor disparity is even more than 50% !!
See on chronicle.com