Preserved : 1980: 1980(March, June, September, December), 1981: 1981(March, June, September, December), 1982: 1982(March, June, September, December), 1983: 1983(March, June, September, December) |
Preserved : 1987: 1987(March, June, December), 1988: 1988(March, June), 1989: 1989(March, June, September) |
Preserved : 1996: 1996(September), 1997: 1997(March, December), 1998: 1998(January, June, December), 1999: 1999(January), 2000: 2000(January), 2001: 2001(March, June, September, December), 2002: 2002(March, June, September, December), 2003: 2003(January, March, June), 2004: 2004(March, June, September, December) |