1983 | 1988 | 1993 | |
---|---|---|---|

Estimated annual rate/100 000 for England and Wales | 13.0 | 9.4 | 10.1 |

Ratio to England and Wales rate (n) | |||

Rate 4 times or greater | 5 | 4 | 10 |

Rate 3.0–3.99 times | 2 | 12 | 7 |

Rate 2.0–2.99 times | 20 | 16 | 23 |

Rate 1.0–1.99 times | 66 | 56 | 43 |

Rate 0.50–0.99 times | 120 | 99 | 72 |

Rate up to 0.49 times | 148 | 139 | 125 |

No cases | 42 | 77 | 123 |