Section 9: replaced, on 5 November 1982, by section 4 of the Statistics Amendment Act 1982 (1982 No 38).
Section 9(1): amended, on 15 December 1994, by section 2(4)(a) of the Statistics Amendment Act 1994 (1994 No 159).
Section 9(1) proviso paragraph (a): amended, on 15 December 1994, by section 2(4)(a) of the Statistics Amendment Act 1994 (1994 No 159).