Twenty years, 79 slams

Each column is a season, each square a grand slam. Orange: won by Federer, Nadal or Djokovic.

8
seasons they won all four
10
seasons they won all but one
2
seasons they won only two (2014, 2016)
Big Three Someone else Not played (Wimbledon 2020)

Top to bottom in each column: Australian Open, Roland Garros, Wimbledon, US Open. 65 of 79 slams played, 2004 to 2023.