Link to Series in Level 1 Subscription Site
Link to Series in Level 2 Subscription Site
Link to Series in Level 0 Subscription Site
2010 01 4710231.
2000 01 69627499·
1999 01 38624779·
1998 01 21619932.
1997 01 52612968·
1996 01 64608569.
1995 01 95604412.
1994 01 13603308·
1993 01 65599432.
1992 01 57588736.
1991 01 53570193·
1990 01 3553290·
1989 01 95547160·
1988 01 30541984·
1987 01 24539310·
1986 01 36544269·
1985 01 17532496.
1984 01 90513704.
1983 01 47488418·
1982 01 81449606·
1981 01 32418493.
1980 01 68405315.
1979 01 85403544.
1978 01 32402191.
1977 01 65397363·
1976 01 22393115.
1975 01 25370973.
1974 01 8344696.
1973 01 66333232·
1972 01 32326494·
1971 01 81316494.
1970 01 54304328·
1969 01 11296000.
1968 01 5285000·
1967 01 90278000.
1966 01 38271000·
1965 01 99271000·
1964 01 74263000.
1963 01 15256000.
1962 01 55246000.
1961 01 58238000·
1960 01 94229000·
1959 01 44224000.
1958 01 23224000.
1957 01 36231000·
1956 01 47224000.
1955 01 90222000.
1954 01 88215000.
1953 01 9205000·
1952 01 40189000.
1951 01 91158000·
1950 01 18135000.
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