SE-1 to 27

Preserved : 1975: SE-1(1-4), 1976: SE-2(1-4), 1977: SE-3(1-6), 1978: SE-4(1-6), 1979: SE-5(1-6), 1980: SE-6(1-6), 1981: SE-7(1-6), 1982: SE-8(1-6), 1983: SE-9(1-6), 1984: SE-10(1-6), 1985: SE-11(1-12), 1986: SE-12(1-12), 1987: SE-13(1-12), 1988: 14(1-12), 1989: 15(1-12), 1990: 16(1-12), 1991: 17(1-12), 1992: 18(1-12), 1993: 19(1-12), 1994: 20(1-12), 1995: 21(1-12), 1996: 22(1-12), 1997: 23(1-12), 1998: 24(1-12), 1999: 25(1-6), 2000: 26(1-12), 2001: 27(1-12), 2002: 28(1-12), 2003: 29(1-12), 2004: 30(1-12), 2005: 31(1-12), 2006: 32(1-12), 2007: 33(1-12), 2008: 34(1-6), 2009: 35(1-6), 2010: 36(1-6), 2011: 37(1-6), 2012: 38(1-4, 6), 2013: 39(1-2, 8-12), 2014: 40(1-12), 2015: 41(1-12), 2016: 42(1-12), 2017: 43(1-12), 2018: 44(1-12), 2019: 45(1-12), 2020: 46(1-12), 2021: 47(1-12), 2022: 48(1-12), 2023: 49(1-5, 7-12), 2024: 50(1-7), 2024: PP(99)

Preserved : SE-10 (1 to 6); PP (99); SE-9 (1 to 6); SE-7 (1 to 6); SE-13 (1 to 12); SE-1 (1 to 4); SE-11 (1 to 12); SE-2 (1 to 4); SE-4 (1 to 6); SE-3 (1 to 6); SE-6 (1 to 6); SE-12 (1 to 12); SE-5 (1 to 6); SE-8 (1 to 6); 14 (1 to 12); 15 (1 to 12); 16 (1 to 12); 17 (1 to 12); 18 (1 to 12); 19 (1 to 12); 20 (1 to 12); 21 (1 to 12); 22 (1 to 12); 23 (1 to 12); 24 (1 to 12); 25 (1 to 6); 26 (1 to 12); 27 (1 to 12); 28 (1 to 12); 29 (1 to 12); 30 (1 to 12); 31 (1 to 12); 32 (1 to 12); 33 (1 to 12); 34 (1 to 6); 35 (1 to 6); 36 (1 to 6); 37 (1 to 6); 38 (1 to 6); 39 (1 to 12); 40 (1 to 12); 41 (1 to 12); 42 (1 to 12); 43 (1 to 12); 44 (1 to 8, 10 to 12); 45 (1 to 12); 46 (1 to 12); 47 (1 to 11); 48 (1 to 12); 49 (1 to 12); 50 (1 to 3)