2001
3,007,244
2002
2,909,594
2003
2,973,612
2004
3,207,227
2005
3,215,522
2006
3,185,927
2007
3,295,826
2008
3,372,007
627,657
440,335
540,649
943,161
820,205
1,674,379
1,697,628