1999 2000 2001 2002
January       11,337        9,399     11,794         9,030
February       10,671       11,299     11,486       10,533
March       12,580       12,939     11,316       13,482
April       10,803       11,857     11,694       10,903
May        8,630        9,504      8,914         9,841
June        7,833        9,183      8,003         8,004
July        9,409        9,747      8,919         9,835
August       11,777       10,350      9,710       11,132
September        4,873        3,661      3,241         3,767
October        5,801        5,302      4,354         5,850
November        5,592        8,259      7,103         8,445
December        7,423       10,969      8,440       10,296