2001N
2001/4/1`4/15
2001/4/16`4/30
2001/5/1`5/15
2001/5/16`5/31
2001/6/1`6/15
2001/6/16`6/30
2001/7/1`7/15
2001/7/16`7/31
2001/8/1`8/15
2001/8/16`8/31
2001/9/1`9/15
2001/9/16`9/30
2001/10/1`10/15
2001/10/16`10/31
2001/11/1`11/15
2001/11/16`11/30
2001/12/1`12/15
2001/12/16`12/31
@