| 
                
            
            	| Purchases summarize all trades executed during the indicated period including purchases associated with dollar rolls.* |  
                     
                      | Transactions 
                        ($ million) |   
                      | 
                           
                            | Maturity | Coupon | Settlement 
                                Month | FHLMC | FNMA | GNMA | GNMA2 |  
                            | 30 Year | 3 | May | 884 | 1,156 | 0 | 880 |  
                            |  | 3.5 | May | 783 | 1,016 | 0 | 1,140 |  
                            |  |  |  |  |  |  |  |  
                            | 15 Year | 2.5 | May | 127 | 262 | 0 | 0 |  
                            |  | 3 | May | 88 | 123 | 0 | 0 |  
                            |  |  |  |  |  |  |  |   
                            | Total |  |  | 1,882 | 2,557 | 0 | 2,020 |  
                          	| *Does not include trades associated with small value exercises. |  |  |