| Covers listed |
|
| 1952: | 18 August, |
| 1956: | 27 August, |
| 1958: | 24 November, |
| 1959: | 26 January, 3 August, |
| 1960: | 11 July, |
| 1962: | 19 March, |
| 1963: | 14 January, 2 September, 9 December, |
| 1965: | 11 January, |
| 1966: | 8 August, 22 August, |
| 1971: | 8 February, |
| 1972: | 28 August, |
| 1974: | 15 July, |
| 1975: | 24 March, 7 July, |
| 1976: | 8 March, 24 May, 9 August, 27 September, 22 November, 29 November, |
| 1977: | 14 February, 23 May, 6 June, 13 June, 17 October, 21 November, |
| 1978: | 27 February, 20 March, |
| 1979: | 26 March, 2 April, 9 April, 25 June, 23 July, 27 August, 3 September, 10 September, 22 October, 3 December, 10 December, |
| 1980: | 6 March, 3 July, 10 July, |
| 1981: | 18 February, 4 March, 11 March, 28 October, 9 December, |
| 1982: | 30 November, |
| 1983: | 17 January, 14 February, 25 April, |
| 1984: | 23 January, 19 March, 7 May, 14 May, 23 July, 3 December, |
| 1985: | 7 January, 10 June, 24 June, 16 September, |
| 1986: | 18 August, 8 October, 24 November, 15 December, |
| 1988: | 20 September, |
| 1989: | 17 January, 7 March, 5 June, |
| 1990: | 9 January, 8 May, |
| 1991: | 16 April, 4 June, |
| 1992: | 14 January, 3 March, 3 August, 10 August, 5 October, |
| 1993: | 7 June, |
| 1994: | 21 March, 4 April, 30 May, |
| 1995: | 15 May, 17 July, |
| 1997: | 27 January, |
| 1998: | 6 April, 29 June, 20 July, |
| 1999: | 10 May, 7 June, 12 July, |
| 2000: | 6 March, 10 April, 17 July, 7 August, |
| 2001: | 1 January, 8 January, 8 February, 26 March, 5 November, 26 November, 17 December, |
| 2002: | 23 December, |
| 2003: | 20 January, 25 August, |
| 2004: | 31 May, |
| 2005: | 31 January, 14 March, |
| 2006: | 13 February, 19 June, |
| 2010: | 8 February, |
| 2011: | 4 April, |
| 2012: | 13 February, |
| 2013: | 4 February, 23 September, |
| 2022: | 22 August, |
