Purpose:

Returns the decade of the date. Hint: The value is always relative to the start of the century (1..10)!

Parameter:

Date    

Boolean         (optional) sets whether the calculation should be carried out 'simply' (decade starts with year 0) or 'historically' (decade starts with year 1). Default: False

Return value:

Number

Example:

Decade(Date("01.01.2015"))           Result: 2

Decade(Date("01.01.2000"))           Result: 10

Decade(Date("01.01.2000"),True)    Result: 1