1999/12/31 19991231 1999/12/26 19991226 1999/12/21 19991221 1999/12/13 19991213 1999/12/9 19991209 1999/12/7 19991207 1999/12/6 19991206 1999/12/5 19991205 1999/12/4 19991204 1999/12/2 19991202