| 
                
            
            	| 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 | Apr | 400 | 900 | 0 | 954 |  
                            |  | 3.5 | Apr | 1,128 | 1,281 | 0 | 1,486 |  
                            |  | 4 | Apr | 75 | 150 | 0 | 158 |  
                            |  |  |  |  |  |  |  |  
                            | 15 Year | 2.5 | Apr | 100 | 100 | 0 | 0 |  
                            |  | 3 | Apr | 75 | 125 | 0 | 0 |  
                            |  |  |  |  |  |  |  |   
                            | Total |  |  | 1,778 | 2,556 | 0 | 2,598 |  
                          	| *Does not include trades associated with small value exercises. |  |  |