怎么分辨短语做定语还是状语

Data from the latest census, released on May 11th, showed that only 12mbabies were born last year, a drop of almost 20% from 2019.

这是《经济学人》上的一句话，我的疑惑在于released on May 11th,假如去判断的话，它到底应该是做Data from thelatest census showed that only 12 million babies were born last year这句话的定语还是状语呢？判断的规范是什么呢？

假如把句子的地方改变一下，是不是判断的角度是不是又会有变化呢？如下：

Released on May 11th,data from the latest census showed that only 12mbabies were born last year, a drop of almost 20% from 2019.

剖析为定语和状语都是可以的。