Interest rates on new credit card offers stayed put for the second straight week, according to the CreditCards.com Weekly Credit Card Rate Report.

The national average annual percentage rate (APR) on new card offers remained unchanged at 14.91% Wednesday.

None of the cards that CreditCards.com tracks featured offer changes this week. That includes changes to promotional balance transfer offers and promotional APRs.

Issuers have left card offers alone for much of 2012. In previous years, issuers tinkered with the terms of their credit card offers much more often. For example, they regularly experimented with new promotions, such as lengthening the interest-free period on a balance transfer offer, and frequently altered interest rates.

In the past year, however, the national average APR has moved just 11 times since Jan. 1, 2012. By contrast, the national average moved 24 times during the same period in 2010.