2000 : 5.0 million
2001 : 9.7 million
2002 : 16.1 million
2003 : 22.3 million
2004 : 32.5 million
2005 : 42.9 million
2006 : 54.0 million
2008 : 67.7 million
2009 : 80.0 million
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2000 : 5.0 million
2001 : 9.7 million
2002 : 16.1 million
2003 : 22.3 million
2004 : 32.5 million
2005 : 42.9 million
2006 : 54.0 million
2008 : 67.7 million
2009 : 80.0 million