Preserved : 1978: 1(1-4), 1979: 2(1-4), 1980: 3(1-4), 1981: 4(1-4), 1982: 5(1-3), 1983/1984: 6(1-3), 1984/1985: 7(1-3), 1985/1986: 8(1-3), 1986/1987: 9(1-3), 1987/1988: 10(1-3), 1988/1989: 11(1-3), 1989/1990: 12(1-3), 1990/1991: 13(1-3), 1991/1992: 14(1-3), 1992/1993: 15(1-3), 1993/1994: 16(1-3), 1994/1995: 17(1-3), 1995/1996: 18(1-3), 1996/1997: 19(1-3), 1997/1998: 20(1-3), 1998/1999: 21(1-3), 1999/2000: 22(1-3), 2000/2001: 23(1-3), 2001/2002: 24(1-3), 2002/2003: 25(1-3), 2003/2004: 26(1-3), 2004/2005: 27(1-3), 2005/2006: 28(1-3), 2006/2007: 29(1-3), 2007/2008: 30(1-3), 2008/2009: 31(1-3), 2009/2010: 32(1-3), 2010/2011: 33(1-3), 2011/2012: 34(1-3), 2012/2013: 35(1-3), 2013/2014: 36(1-3), 2014/2015: 37(1-3), 2015/2016: 38(1-3), 2016/2017: 39(1-3), 2017/2018: 40(1-3), 2018/2019: 41(1-3), 2019/2020: 42(1-3), 2020/2021: 43(1-3), 2021/2022: 44(1-3), 2022/2023: 45(1-3), 2023: 46(1-2)

Preserved : 1 (2 to 4); 2 (1 to 4); 3 (1 to 4); 4 (1-2, 3, 4); 5 (1 to 3); 6 (1 to 3); 7 (1 to 3); 8 (1 to 3); 9 (1 to 3); 10 (1 to 3); 11 (1 to 3); 12 (1 to 3); 13 (1 to 3); 14 (1 to 3); 15 (1 to 3); 16 (1 to 3); 17 (1 to 3); 18 (1 to 3); 19 (1 to 3); 20 (1 to 3); 21 (1 to 3); 22 (1 to 3); 23 (1 to 3); 24 (1 to 3); 25 (1 to 3); 26 (1 to 3); 27 (1 to 3); 28 (1 to 3); 29 (1 to 3); 30 (1 to 3); 31 (1 to 3); 32 (1 to 3); 33 (1 to 3); 34 (1 to 3); 35 (1 to 3)