This is a list of Acts of the Parliament of Northern Ireland, from its first session in 1921 to suspension in 1972. The short titles for these Acts were distinguished from those passed by the Westminster parliament by the insertion of the bracketed words "Northern Ireland" between the word "Act" and the year. Thus Police Act (Northern Ireland) 1970 was an Act passed by the Parliament of Northern Ireland, whereas the Police (Northern Ireland) Act 1998 was passed at Westminster. As with UK legislation, Northern Ireland's Acts of Parliament were traditionally cited using the regnal year(s) of the parliamentary session in which they became law, though in 1954 this was retrospectively changed to calendar years beginning with 1943. Note that by convention "(N.I.)" is also added after the chapter number so as to avoid confusion with Westminster legislation. 1921–1929 1921 Appropriation Act (Northern Ireland) 1921 Exchequer and Audit Act (Northern Ireland) 1921 c. 2 (N.I.) [12 Geo. 5] Local Government (Emergency Powers) Act (Northern Ireland) 1921 Ministries of Northern Ireland Act (Northern Ireland) 1921 c.6 (N.I.) Salaries of Ministerial Offices Act (Northern Ireland) 1921 Speaker of the House of Commons Act (Northern Ireland) 1921 Speaker of the Senate Act (Northern Ireland) 1921 1922 Appropriation Act (Northern Ireland) 1922 Appropriation (No. 2) Act (Northern Ireland) 1922 Church Temporalities Fund Act (Northern Ireland) 1922 c. 13 (N.I.) Civil Authorities (Special Powers) Act (Northern Ireland) 1922 c. 5 (N.I.) [12 & 13 Geo. 5] Constabulary Act (Northern Ireland) 1922 c. 8 (N.I.) [12 & 13 Geo. 5] Expiring Laws Act (Northern Ireland) 1922 c. 21 (N.I.) [12 & 13 Geo. 5] Finance Act (Northern Ireland) 1922 c. 18 (N.I.) Joint Nursing and Midwives Council Act (Northern Ireland) 1922 c. 10 (N.I.) Live Stock Breeding Act (Northern Ireland) 1922 c. 12 (N.I.) Loans Guarantee Act (Northern Ireland) 1922 Local Authorities (Elections and Constitution) (Northern Ireland) Act 1922 Local Government Act (Northern Ireland) 1922 Londonderry Bridge Act (Northern Ireland) 1922 Motor Vehicle Races Act (Northern Ireland) 1922 National Health Insurance Act (Northern Ireland) 1922 Referees and Arbitrators (Procedure) Act (Northern Ireland) 1922 Solicitors Act (Northern Ireland) 1922 Unemployment Insurance (Amendment) Act (Northern Ireland) 1922 Uniformity of Laws Act (Northern Ireland) 1922 c. 20 (N.I.) 1923 Appropriation Act (Northern Ireland) 1923 Appropriation (No. 2) Act (Northern Ireland) 1923 Bangor Gas Provisional Order Confirmation Act (Northern Ireland) 1923 Basil McCrea Endowments Act (Northern Ireland) 1923 Belfast Water