.3 million . share repurchases increased in an effort to offset most of the dilution associated with the issuance of shares to bm&fbovespa . the increase in cash used in 2009 relative to 2008 was due to new issuances of debt of $ 2.9 billion in 2008 in conjunction with our merger with nymex holdings compared with net debt reductions of $ 900.1 million in debt instruments . the following table summarizes our debt outstanding as of december 31 , 2010: .