US sales were particularly strong, accounting for 40-50 per cent.
US sales of the drug were of $2.2 billion in 2006.
US military sales to Kuwait total $5.5 billion over the last 10 years.
US sales began in August 1988 and continued until 1990.
U.S. sales hit a high of just over 14,000 cars in 1987.
US sales began to quickly jump into triple digits annually.
Before the year is out, 21 will top the 4 million mark in U.S. sales.
The company only reached the same level of U.S. sales again by model year 2000.
This also made it their third consecutive album with US sales of at least five million.
In its second week, US sales saw the album fall to number three with 57,000 copies sold.