| 1 | U (code) i.e. annual income Less than £3,999 | 47 | 
                                                
                                                    | 2 | H (code) i.e. annual income £4,000 to £4,999 | 21 | 
                                                
                                                    | 3 | N (code) i.e. annual income £5,000 to £5,999 | 13 | 
                                                
                                                    | 4 | L (code) i.e. annual income £6,000 to £6,999 | 22 | 
                                                
                                                    | 5 | V (code) i.e. annual income £7,000 to £7,999 | 19 | 
                                                
                                                    | 6 | C (code) i.e. annual income £8,000 to £8,999 | 31 | 
                                                
                                                    | 7 | Z (code) i.e. annual income £9,000 to £9,999 | 56 | 
                                                
                                                    | 8 | W (code) i.e. annual income £10,000 to £12,499 | 60 | 
                                                
                                                    | 9 | D (code) i.e. annual income £12,500 to £14,999 | 81 | 
                                                
                                                    | 10 | R (code) i.e. annual income £15,000 to £17,499 | 97 | 
                                                
                                                    | 11 | E (code) i.e. annual income £17,500 to £19,999 | 69 | 
                                                
                                                    | 12 | T (code) i.e. annual income £20,000 to £24,999 | 172 | 
                                                
                                                    | 13 | B (code) i.e. annual income £25,000 to £29,999 | 182 | 
                                                
                                                    | 14 | F (code) i.e. annual income £30,000 to £34,999 | 165 | 
                                                
                                                    | 15 | G (code) i.e. annual income £35,000 to £39,999 | 87 | 
                                                
                                                    | 16 | I (code) i.e. annual income £40,000 to £49,999 | 160 | 
                                                
                                                    | 17 | P (code) i.e. annual income £50,000 to £59,999 | 78 | 
                                                
                                                    | 18 | A (code) i.e. annual income £60,000 to £74, 999 | 58 | 
                                                
                                                    | 19 | M (code) i.e. annual income £75,000 to £89, 999 | 30 | 
                                                
                                                    | 20 | K (code) i.e. annual income £90,000 to £104,999 | 16 | 
                                                
                                                    | 21 | S (code) i.e. annual income £105,000 to  £134,999 | 5 | 
                                                
                                                    | 22 | J (code) i.e. annual income £135,000 to £179,999 | 11 | 
                                                
                                                    | 23 | Q (code) i.e. annual income £180,000 to £239,999 | 11 | 
                                                
                                                    | Sysmiss |  | 1 |