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Year
1990
1,972
1991
1,876
1992
2,104
1993
2,023
1994
2,337
1995
2,578
1996
2,418
1997
2,498
1998
2,480
1999
2,602
2000
2,444
2001
2,236
2002
2,190
2003
2,034
2004
2,262
2005
2,126
2006
2,126
2007
1,982
2008
2,048
2009
1,716
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