Incidence rates per 100 000 between 1995 and 2014 for the different code categories
| Code category | |||||
|---|---|---|---|---|---|
| Year | 1 (type 1) | 2 (type 2) | 3 (no type) | 4a (suggested, not ‘seen in’) | 4b (suggested, ‘seen in’) |
| 1995 | 21.4 | 126.7 | 55.3 | 11.9 | 2.1 |
| 1995 | 21.4 | 126.7 | 55.3 | 11.9 | 2.1 |
| 1996 | 22.7 | 145.0 | 59.9 | 8.6 | 2.8 |
| 1997 | 22.3 | 150.8 | 50.9 | 7.8 | 3.8 |
| 1998 | 20.8 | 167.9 | 47.5 | 6.5 | 3.6 |
| 1999 | 22.1 | 199.5 | 45.6 | 6.1 | 4.1 |
| 2000 | 24.5 | 256.9 | 45.2 | 5.9 | 6.1 |
| 2001 | 24.1 | 293.4 | 41.5 | 6.5 | 7.7 |
| 2002 | 20.8 | 323.0 | 33.3 | 8.0 | 7.8 |
| 2003 | 19.0 | 332.2 | 22.1 | 11.9 | 8.9 |
| 2004 | 19.1 | 359.9 | 18.8 | 15.7 | 16.3 |
| 2005 | 17.1 | 354.2 | 11.9 | 16.1 | 16.5 |
| 2006 | 15.4 | 341.4 | 5.6 | 17.9 | 32.2 |
| 2007 | 15.1 | 345.8 | 6.8 | 17.1 | 100.7 |
| 2008 | 14.9 | 351.2 | 5.2 | 12.4 | 153.3 |
| 2009 | 15.0 | 358.8 | 5.3 | 14.5 | 198.4 |
| 2010 | 14.9 | 350.4 | 6.5 | 14.9 | 183.0 |
| 2011 | 14.2 | 327.9 | 6.9 | 19.6 | 173.3 |
| 2012 | 14.4 | 331.4 | 10.0 | 19.5 | 186.3 |
| 2013 | 12.9 | 334.8 | 16.2 | 22.3 | 186.7 |
| 2014 | 11.3 | 284.9 | 20.7 | 25.0 | 163.6 |