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Data from previous publication dates
1960 01 13-0.059
1960 02 80-0.067
1960 03 15-0·063
1960 04 62-0.065
1961 01 93-0·067
1961 02 80-0.059
1961 03 99-0·074
1961 04 53-0.068
1962 01 28-0·068
1962 02 66-0·066
1962 03 71-0·079
1962 04 29-0·084
1963 01 66-0·088
1963 02 20-0.092
1963 03 45-0.098
1963 04 36-0·092
1964 01 84-0·121
1964 02 48-0·087
1964 03 58-0.097
1964 04 43-0.111
1965 01 83-0·109
1965 02 81-0·116
1965 03 73-0·111
1965 04 43-0·120
1966 01 86-0·124
1966 02 78-0.128
1966 03 77-0.128
1966 04 56-0·132
1967 01 46-0·134
1967 02 18-0·137
1967 03 85-0·142
1967 04 25-0·148
1968 01 36-0·138
1968 02 9-0.136
1968 03 34-0.142
1968 04 21-0·214
1969 01 58-0.143
1969 02 83-0·145
1969 03 86-0·145
1969 04 37-0·153
1970 01 37-0·146
1970 02 96-0·143
1970 03 29-0.139
1970 04 92-0·148
1971 01 24-0·136
1971 02 29-0·149
1971 03 78-0·154
1971 04 31-0·152
1972 01 93-0.143
1972 02 90-0·153
1972 03 68-0.150
1972 04 22-0·144
1973 01 45-0·152
1973 02 10-0.151
1973 03 64-0.171
1973 04 59-0.166
1974 01 6-0·175
1974 02 45-0.191
1974 03 52-0.186
1974 04 63-0·170
1975 01 26-0·184
1975 02 78-0.211
1975 03 47-0·193
1975 04 77-0.201
1976 01 80-0·209
1976 02 15-0.229
1976 03 86-0.252
1976 04 69-0·221
1977 01 69-0.237
1977 02 87-0.230
1977 03 31-0·229
1977 04 36-0.257
1978 01 18-0·267
1978 02 52-0·271
1978 03 71-0·270
1978 04 94-0·290
1979 01 77-0·301
1979 02 90-0.322
1979 03 18-0.331
1979 04 89-0·285
1980 01 22-0.292
1980 02 9-0·285
1980 03 11-0·349
1980 04 90-0·289
1981 01 54-0·314
1981 02 40-0·329
1981 03 13-0.330
1981 04 90-0·314
1982 01 97-0.323
1982 02 40-0.361
1982 03 10-0.416
1982 04 10-0.359
1983 01 2-0·405
1983 02 90-0·438
1983 03 17-0.369
1983 04 92-0·356
1984 01 45-0.364
1984 02 98-0.381
1984 03 71-0.390
1984 04 7-0.399
1985 01 25-0.450
1985 02 94-0.432
1985 03 34-0.436
1985 04 49-0.417
1986 01 69-0.463
1986 02 35-0.396
1986 03 96-0·444
1986 04 35-0·383
1987 01 26-0·385
1987 02 3-0.453
1987 03 68-0·508
1987 04 12-0.547
1988 01 72-0·492
1988 02 5-0·473
1988 03 88-0.496
1988 04 47-0.460
1989 01 8-0.442
1989 02 72-0.438
1989 03 20-0.464
1989 04 36-0·527
1990 01 59-0·463
1990 02 62-0·494
1990 03 52-0·510
1990 04 96-0·451
1991 01 74-0·472
1991 02 54-0.489
1991 03 95-0.618
1991 04 73-0·537
1992 01 30-0.491
1992 02 57-0·616
1992 03 89-0·584
1992 04 35-0·572
1993 01 27-0.575
1993 02 2-0·556
1993 03 96-0·601
1993 04 76-0·523
1994 01 91-0.630
1994 02 45-0.638
1994 03 4-0·679
1994 04 16-0·613
1995 01 71-0.692
1995 02 68-0.636
1995 03 25-0.662
1995 04 99-0·633
1996 01 43-0·658
1996 02 78-0.657
1996 03 98-0·692
1996 04 94-0.680
1997 01 8-0·666
1997 02 7-0·696
1997 03 86-0.722
1997 04 95-0·678
1998 01 91-0·672
1998 02 10-0.667
1998 03 76-0.765
1998 04 22-0.745
1999 01 42-0·573
1999 02 70-0.586
1999 03 82-0·623
1999 04 17-0.581
2000 01 36-0·585
2000 02 94-0·603
2000 03 41-0·597
2000 04 51-0.600
2001 01 75-0.604
2001 02 12-0.620
2001 03 16-0.624
2001 04 18-0.605
2002 01 83-0·652
2002 02 82-0·633
2002 03 95-0.633
2002 04 37-0·637
2003 01 11-0·659
2003 02 85-0·667
2003 03 91-0·675
2003 04 51-0·685
2004 01 35-0·752
2004 02 28-0.792
2004 03 41-0·826
2004 04 31-0·806
2005 01 54-0.847
2005 02 43-0.812
2005 03 10-0.853
2005 04 70-0.833
2006 01 94-0.839
2006 02 86-0.859
2006 03 84-0·865
2006 04 87-0·853
2007 01 5-0·888
2007 02 38-0.890
2007 03 76-0.915
2007 04 26-0·928
2008 01 63-0.925
2008 02 7-0.957
2008 03 25-0.976
2008 04 58-1·048
2009 01 69-1·037
2009 02 24-1·032
2009 03 94-1·102
2009 04 75-1.245
2010 01 47-1.087
2010 02 46-1.116
2010 03 69-1.221
2010 04 97-1·198
2011 01 48-1.081
2011 02 54-1.057
2011 03 64-1.170
2011 04 68-1·157
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