Year of Publication
2007
66
2008
60
2009
59
2010
57
2006
55
2011
53
2015
49
2012
47
2018
47
2013
45
2014
45
2001
44
2019
43
2005
42
2017
42
2016
41
2020
38
1998
36
1997
35
1999
34
2003
34
2002
33
1995
32
2004
32
2000
30
1996
28
1994
24
1978
22
1979
22
1993
22
1989
17
1991
17
1981
16
1985
16
1984
15
1988
15
1992
15
1983
13
1987
13
1970
12
1976
12
1982
12
1986
12
1980
11
1990
11
1968
10
1973
10
1975
9
1977
9
2021
9
more ...