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The number varies quite a bit from year to year based on economic needs. Figures for the last few years are:

2006...1,502,400,000

2007...1,197,840,000

2008......625,440,000

2009....... 86,640,000

2010......490,560,000

2011......990,240,000

2012...1,023,600,000

2013...1,223,040,000

2014...1,206,240,000

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9y ago

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