Serbia's public debt-to-GDP ratio rose to 41.7% at the end of March from 41.5% a month earlier, the finance ministry said. Serbian government's building in Belgrade; Photo by Fred Romero via WikiCommons, CC 2.0Total public debt rose to 39.351 billion euro ($46.146 billion) at the end of March from 39.199 billion euro at the end of February, the finance ministry said in a data release on Tuesday. [....]