*Yen Drops To 6-day Low Of 161.60 Against U.S. Dollar

*Yen Slips To 2-day Low Of 179.95 Against Swiss Franc

*Yen Declines To 32-year Low Of 174.75 Against Euro

*Yen Slides To 2-day Low Of 202.62 Against Pound

*NZ Dollar Declines To Near 1-1/2-year Low Of 1.1092 Against Australian Dollar