The birthrate was slightly higher in the former communist East Germany than in the western states.
In 1990, the birthrate in Germany was 1.45 children.
The decline is threatening the future health of Europe's biggest economy.
Chancellor Angela Merkel's coalition government has introduced several measures in a bid to boost the number of births.
Hundreds of thousands of additional pre-school creche places are to be created and since January 1, fathers or mothers can take a year's paid maternity leave and their partners two months.