Preserved : 1955/1956: 31(1-4), 1956/1957: 32(1-4), 1957/1958: 33(1-4), 1958/1959: 34(1, 3-4), 1959/1960: 35(1-4), 1960/1961: 36(1-4), 1961/1962: 37(1-2, 4), 1962/1963: 38(1-4), 1963: 39(1-4)

Preserved : 1964/1965: 40(3-4), 1965/1966: 41(1-4), 1966/1967: 42(1-4), 1967/1968: 43(1-4), 1968/1969: 44(1-4), 1969/1970: 45(1-4), 1970/1971: 46(1-4), 1971/1972: 47(1-4), 1972: 48(1-3), 1973: 49(1-4), 1974: 50(1-4), 1975: 51(1-4), 1976: 52(1-4), 1977: 53(1-4), 1978: 54(1-4), 1979: 55(1-4), 1980: 56(1-4), 1981: 57(1-4), 1982: 58(1-4), 1983: 59(1-4), 1984: 60(1-4), 1985: 61(1-4), 1986: 62(1-4), 1987: 63(1-4), 1988: 64(1-4), 1989: 65(1-4), 1990: 66(1-4), 1991: 67(1-4), 1992: 68(1-4), 1993: 69(1-4), 1994: 70(1-4), 1995: 71(1-4), 1996: 72(1-4), 1997: 73(1-4), 1998: 74(1-4), 1999: 75(1-4), 2000: 76(1-4), 2001: 77(1-4), 2002: 78(1-4), 2003: 79(1-4), 2004: 80(1-4), 2005: 81(1-4), 2006: 82(1-4), 2007: 83(1-4), 2008: 84(1-4), 2009: 85(1-4), 2010: 86(1-4), 2011: 87(1-4), 2012: 88(1-4), 2013: 89(1-4), 2014: 90(1-4), 2015: 91(1-4), 2016: 92(1-4), 2017: 93(1-4), 2018: 94(1-4), 2019: 95(1-4), 2020: 96(1-4)

Preserved : 31 (1 to 4); 32 (1 to 4); 33 (1 to 4); 34 (1 to 4); 35 (1 to 4); 36 (1 to 4); 37 (1 to 4); 38 (1 to 4); 39 (1, 2, 3-4); 40 (1 to 4); 41 (1 to 4); 42 (1 to 4); 43 (1 to 4); 44 (1 to 4); 45 (1 to 4); 46 (1 to 4); 47 (1 to 4); 48 (1 to 3); 49 (1 to 4); 50 (1 to 4); 51 (1 to 4); 52 (1 to 4); 53 (1 to 4); 54 (1 to 4); 55 (1 to 4); 56 (1 to 4); 57 (1 to 4); 58 (1-2, 3, 4); 59 (1 to 4); 60 (1 to 4); 61 (1 to 4); 62 (1 to 4); 63 (1, 2-3, 4); 64 (1 to 4); 65 (1 to 4); 66 (1 to 4); 67 (1 to 4); 68 (1-2, 3, 4); 69 (1 to 4); 70 (1 to 4); 71 (1 to 4); 72 (1 to 4); 73 (1-2-3, 4); 74 (1 to 4); 75 (1-2-3, 4); 76 (1 to 4); 77 (1 to 4); 78 (1 to 4); 79 (1-2, 3, 4); 80 (1, 2-3, 4); 81 (1-2, 3, 4); 82 (1-2, 3, 4); 83 (1 to 4); 84 (1 to 4); 85 (1 to 4); 86 (1 to 4); 87 (1 to 4); 88 (1 to 4); 91 (1-2); 92 (4); 93 (3); 94 (1, 4); 95 (1, 2-3, 4); 96 (1, 2, 4)