1 997 ฿ 1 633 ฿ 0 Jan 1 997 ฿ Feb 1 930 ฿ Mar 1 963 ฿ Apr 1 864 ฿ May 1 963 ฿ Jun 1 963 ฿ Jul 1 974 ฿ Aug 1 638 ฿ Sep 1 633 ฿ Oct 1 897 ฿ Nov 1 930 ฿ Dec 1 997 ฿