Historically the forint was subdivided into 100 "fillér" (comparable to a penny), although fillér coins have been rendered useless by inflation and have not been in circulation since 1999. (Since 2000, one forint has typically been worth about half a US cent or slightly less.) The Hungarian abbreviation for forint is "Ft", which is written after the number with a space between. The name fillér, the subdivision of all Hungarian currencies since 1925, comes from the German word "Vierer" which denoted a four-krajcár-piece. The abbreviation for the fillér was "f", also written after the number with a space in between.