year entries
1969
38
1971
36
1978
32
1968
30
1970
30
1972
30
1973
30
1988
29
1994
29
1967
28
1996
28
1979
27
1974
26
1977
26
1980
25
1987
25
1992
25
1986
24
1989
24
1997
24
1990
23
1993
23
1999
23
1975
22
1991
22
1995
22
1976
19
1982
19
1966
18
1981
18
1998
18
2000
18
1985
17
1983
16
1984
15
1965
12
2001
11
2002
8
2004
8
1963
7
1964
7
1956
6
1957
6
1958
6
2010
6
2017
6
1959
5
1960
5
2003
5
2006
5
2008
5
2007
4
2009
4
2012
4
2016
4
1962
3
2005
3
2013
3
2011
2
2014
2
2015
2
1955
1
1961
1
2018
1