Holdings
1969,22; 1970,18-21,23,25-27,29-30,32,37,39,40-43,45-52; 1971,1-3,5-6,8-26,28-31,33-45,47-49,51-56,58-60; 1972,1-3,5-16,18,25,28-50a; 1973,1-5a,7-16,18-21,22-31,34-46,48-53,55-55a; 1974,1-31a; 1976,26-27; 1977,40; 1978,15,22-23,28,30a,41,48-51,53a; 1980,1-53; 1981,1-15,17-53; 1982,1-26,37a,46a,48,51a,53a; 1983,19-21,26-27; 1984,2,13,18,34,43-43a,47a-48a,52 1985,4a-5,11,14,20,25,34-34a,41,43a,52; 1986,2,7,13,17,46-47a; 1987,3-8,10-14,16-16a,20-21a,23-24,26,28,29a,31-33,37,42a-43,45-48a,50a-51; 1990,30,52a; 1991,7,9-9a,18a-19,24-25,34-35; 1992,6-7,12,17,19,28,30,45,52-52a; 1993,2a; 2002,50; 2003,41; 2004,48; 2010,42; 2014,25; 2016,2