1 to 51

Preserved : 1 (1, 2); 2 (1, 2); 3 (1, 2); 4 (1, 2); 5 (1, 2); 6 (1, 2); 7 (1-3); 8 (1, 2); 9 (1-3); 10 (S1, 1, 2); 11 (1-3); 12 (S1, 1-3); 13 (S1, 1-3); 14 (1-3); 15 (1-3); 16 (S1, 1-4); 17 (1-4); 18 (1-4); 19 (S1, 1-4); 20 (1-4); 21 (1-4); 22 (1-3); 23 (S1, 1); 24 (2-4); 25 (1-4); 26 (1-4); 27 (1-4); 28 (S1, 1-4); 29 (1-4); 30 (S, 1-4); 31 (1-4); 32 (1-4); 33 (1-4); 34 (1-4); 35 (1-4); 36 (1-6); 37 (1-6); 38 (1-6); 39 (1-6); 40 (1-6); 41 (1-6); 42 (1-6); 43 (1-6); 44 (1-6); 45 (1, 3-6); 46 (1-6)

Preserved : 1974: 1(1-2), 1975: 2(1-2), 1976: 3(1-2), 1977: 4(1-2), 1978: 5(1-2), 1979: 6(1-2), 1980: 7(1-3), 1981: 8(1-2), 1982/1983: 9(1-3), 1983: 10(1, S 1, 2), 1984: 11(1-3), 1985: 12(1, S 1, 2, S 2, 3), 1986: 13(1, S 1, 2, S 2, 3), 1987: 14(1-3), 1988: 15(1-3), 1989/1990: 16(1, S 1, 2-4), 1990: 17(1-4), 1991: 18(1-4), 1992: 19(1, S 1, 2-4), 1993: 20(1-4), 1994: 21(1-4), 1995: 22(1-3), 1996: 23(1, S 1), 1997: 24(1-4), 1998: 25(1-4), 1999: 26(1-4), 2000: 27(1-4), 2001: 28(1-4), 2002: 29(1-4), 2003: 30(1-4, ), 2004: 31(1-4), 2005: 32(1-4), 2006: 33(1-4), 2007: 34(1-4), 2008: 35(1-4), 2009: 36(1-6), 2010: 37(1-6), 2011: 38(1-6), 2012: 39(1-6), 2013: 40(1-6), 2014: 41(1-6), 2015: 42(1-6), 2016: 43(1-6), 2017: 44(1-6), 2018: 45(1-6), 2019: 46(1-6), 2020: 47(1-6), 2021: 48(1-6), 2022: 49(1-6), 2023: 50(1-6), 2024: 51(1-5)

Preserved : 22 (2, 3); 23 (Supplement, 1); 24 (2 to 4); 25 (1 to 4); 26 (1 to 4); 27 (1 to 4); 28 (Supplement, 1 to 4); 29 (1 to 4); 30 (Supplement, 1 to 4); 31 (1 to 4); 32 (1 to 4); 33 (1 to 4); 34 (1 to 4); 35 (1 to 4); 36 (1 to 6); 37 (1 to 6); 38 (1 to 6); 39 (1 to 6); 40 (1 to 4, 6); 41 (1 to 5); 42 (1 to 6); 43 (1 to 6); 44 (1 to 6); 45 (1 to 6); 46 (1 to 6); 47 (1, 5, 6); 48 (1 to 6); 49 (1 to 6); 50 (1 to 6); 51 (2)