Date
- 1981 August 151
- 1981 August 181
- 1981 August 211
- 1981 August 261
- 1981 August 51
- 1981 December1
- 1981 December 101
- 1981 December 151
- 1981 December 221
- 1981 December 301
- 1981 December 91
- 1981 February 101
- 1981 February 171
- 1981 February 191
- 1981 February 251
- 1981 February 261
- 1981 February 51
- 1981 January1
- 1981 January 121
- 1981 January 131