A massive number of CMBS loans matured in June, pushing the delinquency rate to the highest it has been in years.

The CMBS delinquency rate has been on a gradual climb for more than a year after hitting a post-crisis low in February 2016, according to Trepp data.

As vintage loans issued in 2006 and 2007 come due this year, many will not qualify for refinancing due to lenders’ strict post-recession standards, resulting in rising delinquencies and added turmoil in the CMBS market.

In June, $10B in CMBS loans matured and were in need of refinancing, Trepp reports. It predicts maturities will decline again for the remainder of the year. Delinquencies jumped 28 basis points to 5.75%, up from 4.6% a year ago. That represents $2.4B worth of new loans that became delinquent in June, according to Trepp CMBS research.

Office, industrial and retail properties led the pack in loan delinquencies in June, and between now and November roughly $41.7B in CMBS debt is set to mature.