Copy & paste job from someone less lazy than me!
The 2000-2009 decade:
Number of different league winners:
Premier League: 3 (United, Arsenal, Chelsea)
La Liga: 4 (La Coruna, Real, Valencia, Barca)
Serie A : 5 ( Lazio, Roma, Juve, Milan, Inter)
Bundesliga: 5 (Bayern, Dortmund, Bremen, Stuttgart, Wolfsburg)
Points the league winners accumulated and points/game average:
Premier League:
91, 80, 87, 83, 90, 95, 91, 89, 87, 90 = 883 => 883/380 = 2.32points/game
La Liga:
69, 80, 75, 78, 77, 84, 82, 76, 85, 87 = 793 => 793/380 = 2.09 points/game
Serie A (Juve's league title win that was taking away from them):
72, 75, 71, 72, 82, 86, 76 (91), 97, 85, 84 = 800 (815) => 2.11 (2.14) points/game
Bundesliga (34 game league, so the points/game number at the end is the best way to compare):
73, 63, 70, 75, 74, 77, 75, 70, 76, 69 = 722 => 722/340 = 2.12 points/game
Number of different teams finishing in the CL spots:
I mention the number of CL spots to give some perspective, obviously it's more likely to have more diversity in the CL spots with 4 than with just 3 (thinking about it, I should have just compared top 4, but it would just add more teams to the German list and not a new one to the English one)
Premier League: 7 teams (8 seasons with 4 CL spots, 2 seasons with 3, 1 season with 5)
United, Arsenal, Leeds, Liverpool, Newcastle, Chelsea, Everton
La Liga: 13 teams (4 spots in all 10 seasons)
La Coruna, Barca, Valencia, Real, Saragossa, Mallorca, Sociedad, Celta Vigo, Villareal, Betis, Osasuna, Sevilla, Atletico
Serie A: 9 teams (4 spots in all 10 seasons)
Lazio, Juve, Milan, Inter, Roma, Parma, Udinese, Verona, Fiorentina
Bundesliga: 9 teams (8 seasons with 3 spots, 2 seasons with 4)
Bayern, Leverkusen, Hamburg, 1860, Schalke, Dortmund, Stuttgart, Bremen, Wolfsburg