Thanks to Pom pax link we now have times an cycles.
AFTT: 53465.2
Cycles: 7525
I would note on the Southwest 737 the total cycles was 39,786. BUT, they estimate the first crack started at about 1500 cycles.
Ntsb report in word format, with pretty pictures of the bird is here:
http://www.ntsb.gov/doclib/reports/2013/AAB1302.pdf
It is not beyond the realm of possibility that this could be a failure do to a hidden manufacturing defect.