Complex sentence: The number of tourists increased from 4.8 million in 2002 to 8.9 million in 2008, while tourism related revenues grew from $400 million in 2002 to $607 million in 2004.
Split into simpler sentences: The number of tourists increased from 4.8 million in 2002 to 8.9 million in 2008. The revenues grew from $400 million in 2002 to $607 million in 2004.