Numeric Field - Unwanted Data List

I have several Numeric Fields utilized to capture price and quantity input for a transaction record. In PDF view, a drop down list appears for each of the Numeric Fields. The lists show retained and previous data entry for the respective field. How can I eliminate these drop down lists from appearing?

Form created in LifeCycle Designer 7.0
Form viewed and edited in Acrobat Professional 7.0

Numeric Field Settings: (blank means empty)
Field
Type: Numeric Field
Appearance: Sunken Box
Display Pattern: $9.9999
Edit Pattern:
Presence: Visible
Locale: Default locale
Value
Type: User Entered-Required
Default: $0.0000
Empty Message:
Validation Pattern:
Validation Pattern Message:
Validation Script Message:
Binding
Name: Price
Default Binding: Normal
Data Pattern:
Data Format: Float
Import/Export Bindings:

End, and Thanks!