Tahun 1986, Vol.018: No.4 (Nov)(sample). Tahun 1989, Vol.021: No.1-4 (Feb-Nov)(Bundel). Tahun 1990, Vol.022: No.1-4 (Feb-Nov)(Bundel). Tahun 1991, Vol.023: No.1-4 (No.3 Part.1-2)(Feb-Nov)(Bundel). Tahun 1992, Vol.024: No.1-4 (Feb-Nov)(Bundel). Tahun 1993, Vol.025: No.1-4 (No.3 Part.1-2)(Feb-Nov)(Bundel). Tahun 1994, Vol.026: No.1-2 (Feb-May)(Part 1 Aug)(Bundel); No.4 (Nov)(Part 2 Aug)(Bundel). Tahun 1995, Vol.027: No.1-2 (Feb-May)(Part 1 Aug)(Bundel); No.4 (Nov)(Part 2 Aug)(Bundel). Tahun 1996, Vol.028: No.1-3 (Feb-Aug)(Bundel); Part.1-2 (Nov)(Bundel). Tahun 1997, Vol.029: No.1-4 (No.4 Part.1-2)(Feb-Nov)(Bundel). Tahun 1998, Vol.030: No.1-2 (Part No.3-4)(Feb-Nov)(Bundel); Part 2 (Aug). Tahun 1999, Vol.031: No.1-2 (Feb-May) (No.3 part 1)(Feb)(Bundel); No.4 (Nov)(Part 2)(Nov)(Bundel). Tahun 2000, Vol.032: No.1-2 (Feb-May)Part 2(Aug-Nov)+Part 1 (Nov)(Bundel). Tahun 2001, Vol.033: No.1 (Feb) Part 1-2 (May)(Bundel); No.3-4 (Aug-Nov)(Bundel). Tahun 2002, Vol.034: No.1-2(Feb-May)(Bundel); No.4 (Nov)(Part 1-2)(Aug)(Bundel). Tahun 2003, Vol.035: No.1-4 (Feb-Aug)(Bundel); No.5,(Oct), No.6 Part 1-2 (Dec)(Bundel). Tahun 2004, Vol.036: No.1-3 (Feb-Jun)(Bundel); No.4-6 (Aug-Dec)(Bundel). Tahun 2005, Vol.037: No.1-3 (Feb-Jun)(Bundel); No.4-6 (Aug-Dec)(Bundel). Tahun 2006, Vol.038: No.1-2 (Feb-Mar)(Bundel); NO.3-4 (Apr-Jun)(Bundel); No.5-6 (Aug-Sep)(Bundel); No.7-8 (Oct-Dec)(Bundel). Tahun 2007, Vol.039: No.1(+supp) (Feb)(Bundel); No.2-4 (Mar-Jun)(Bundel); No.5-6 (Aug-Sep)(Bundel); No.7-8 (Oct-Dec)(Bundel). Tahun 2008, Vol.040: No.1-3 (Feb-Apr)(Bundel); No.4-5 (Jun-Aug)(Bundel); No.6-8 (Sep-Dec)(Bundel). Tahun 2009, Vol.041: No.1(+supp) (Feb)(Bundel); No.2-4 (Mar-Jun)(Bundel); No.5-6 (Aug-Sep)(Bundel); No.7-8 (Oct-Dec)(Bundel). Tahun 2010, Vol.042: No.1-3 (Feb-Apr)(Bundel); No.4-6 (Jun-Sep)(Bundel); No.7-8 (Oct-Dec)(Bundel). Tahun 2011, Vol.043: No.1-4 (Feb-Jun)(Bundel); No.5-6 (Aug-Sep)(Bundel); No.7-8 (Oct-Dec)(Bundel)+ (Supp.5,7 (Aug, Oct)(Bundel). Tahun 2012, Vol.044: No.1-3 (Feb-Apr)+ supp. No.1 (Feb)(Bundel); No.4-5 (Jun-Aug)(Bundel); No.6-7 (Sep-Oct)(Bundel). Tahun 2013, Vol.045: No.1-4 (Feb-Jun)(Bundel), No.5-6,S1 (Aug-Sep)(Bundel), No.7-8,S2 (Oct-Dec)(Bundel). Tahun 2014, Vol.046: No.1-3,S1 (Feb-Mar/Apr)(Bundel), No.4-6 (Jun-Sep)(Bundel), No.7-8,S2 (Oct-Des)(Bundel). Tahun 2015, Vol.047: No.1-2/3 (Feb-Mar/Apr)+Supplement No.1 (Mar/Apr)(Bundel),4-5 (Jun-Aug)+Supplement No.2 (Jun)(Bundel),6-8 (Sep-Dec)(Bundel). Tahun 2016, Vol.048: No.1- (Feb-);