Year sell-in (Nintendo narrative, second fiscal year), year to March 2004 (Apr 2003-Mar 2004)

The value

• 6 million units (lower bound, 'surpassed the 6 million mark')

Where it comes from

The line in the source

sold more than 6 million copies worldwide during the previous period and has surpassed the 6 million mark in worldwide unit sales this period as well