| UKH2 Bedfordshire, Hertfordshire | ||
| 0 | 1990 | 21756 |
| 1 | 1991 | 21566 |
| 2 | 1992 | 21853 |
| 3 | 1993 | 21595 |
| 4 | 1994 | 21578 |
| 5 | 1995 | 20750 |
| 6 | 1996 | 20872 |
| 7 | 1997 | 20776 |
| 8 | 1998 | 20802 |
| 9 | 1999 | 20398 |
| 10 | 2000 | 20281 |
| 11 | 2001 | 20029 |
| 12 | 2002 | 19842 |
| 13 | 2003 | 20552 |
| 14 | 2004 | 20904 |
| 15 | 2005 | .. |
| 16 | 2006 | .. |