Birth rate

Recent studies/statistics found the birth (or was it replacement?) rate is 1.26, a 0.01 point above the previous year, or about 800+ more births. However, at the end of the reports, it mentioned that there are few hundreds births by single moms, and out of it about 40 over percent were teenagers.

Hmmm... do we just have interest in the any births, or should we monitor to encourage births within marriage and discourage births outside marriage?