Number of Years winning at least two majors in open era

[helterskelter]

Men's singles list:

1. Federer: 6 (2004, 2005, 2006, 2007, 2009, 2017)
2=. Djokovic: 4 (2011, 2015, 2016, 2018)
2=. Nadal: 4 (2008, 2010, 2013, 2017)
2=. Sampras: 4 (1993, 1994, 1995, 1997)
5. Borg: 3 (1978, 1979, 1980)
6=. Connors: 2 (1974, 1982)
6=. Lendl: 2 (1986, 1987)
6=. McEnroe: 2 (1981, 1984)
9=. Wilander: 1 (1988)
9=. Becker: 1 (1989)
9=. Newcombe: 1 (1973)
9=. Laver: 1 (1969)
9=. Vilas: 1 (1977)
9=. Courier: 1 (1992)
9=. Agassi: 1 (1999)

 

[Deleted member 743561]

Men's singles list:

1. Federer: 6 (2004, 2005, 2006, 2007, 2009, 2017)
2=. Djokovic: 4 (2011, 2015, 2016, 2018)
2=. Nadal: 4 (2008, 2010, 2013, 2017)
2=. Sampras: 4 (1993, 1994, 1995, 1997)
5. Borg: 3 (1978, 1979, 1980)
6=. Connors: 2 (1974, 1982)
6=. Lendl: 2 (1986, 1987)
6=. McEnroe: 2 (1981, 1984)
9=. Wilander: 1 (1988)
9=. Becker: 1 (1989)
9=. Newcombe: 1 (1973)
9=. Laver: 1 (1969)
9=. Vilas: 1 (1977)
9=. Courier: 1 (1992)
9=. Agassi: 1 (1999)

In certain cases, by "win" you mean "win*" I'm guessing?

 

[helterskelter]

Women's singles list:

S. Williams: 7 (2002, 2003, 2009, 2010, 2012, 2013, 2015)
Navratilova: 6 (1982, 1983, 1984, 1985, 1986, 1987)
Evert: 5 (1974, 1975, 1976, 1980, 1982)
Graf: 5 (1988, 1989, 1993, 1995, 1996)
Court: 3 (1969, 1970, 1973)
Seles: 2 (1991, 1992)
V. Williams: 2 (2000, 2001)
Henin: 2 (2003, 2007)
Goolagong: 1 (1971)
Sanchez-Vicario: 1 (1994)
Hingis: 1 (1997)
Capriati: 1 (2001)
Kerber: 1 (2016)
[King: 1 (1968), but AO that year was before the start of professional era. I include it because the OE isn't such a game changer in the women's game].