This is some OC shit right here and took a lot of effort to collect. Whoever is on mobile: I'm sorry for the formatting.
What is this? Basically data of CL campaigns throughout the years. Comparing how many CL teams came from Top 5 leagues, how many games a team could play maximum, what the avg goal per game ratio was and of course top scorer. To put all that scoring mania into timeless context.
(Foundation of the Champions League: Pure KO Tournament)
1992/1993:
5 of 32 from top 5 leagues ---
11 games max/team --- Avg Goals/game:
2.38 --- Topscorer: Romario (PSV)
7 goals
(introduction of group stages)
1993/1994:
5 of 32 from top 5 leagues ---
12 games max/team --- Avg Goals/game:
2.89 --- Topscorer: Koeman/Rufer (Barca/Werder)
8 goals
1994/1995:
5 of 16 from top 5 leagues ---
11 games max/team --- Avg Goals/game:
2.30 --- Topscorer: Weah (PSG)
7 goals
1995/1996:
4 of 16 from top 5 leagues ---
11 games max/team --- Avg Goals/game:
2.61 --- Topscorer: Litmanen (Ajax)
9 goals
1996/1997:
6 of 16 from top 5 leagues ---
11 games max/team --- Avg Goals/game:
2.64 --- Topscorer: Pantic (Atletico)
5 goals
1997/1998:
9 of 24 from top 5 leagues ---
11 games max/team --- Avg Goals/game:
2.81 --- Topscorer: Del Piero (Juve)
10 goals
1998/1999:
9 of 24 from top 5 leagues ---
11 games max/team --- Avg Goals/game:
2.80 --- Topscorer: Shevchenko/Yorke (Kiev/Utd)
8 goals
(introduction of 2nd group stage)
1999/2000:
15 of 32 from top 5 leagues ---
17 games max/team --- Avg Goals/game:
2.82 --- Topscorer: Jardel/Rivaldo/Raul (Porto/Barca/Madrid)
10 goals
2000/2001:
16 of 32 from top 5 leagues ---
17 games max/team --- Avg Goals/game:
2.86 --- Topscorer: Raul (Madrid)
7 goals
2001/2002:
15 of 32 from top 5 leagues ---
17 games max/team --- Avg Goals/game:
2.50 --- Topscorer: Van Nistelroy (United)
13 goals
2002/2003:
15 of 32 from top 5 leagues ---
17 games max/team --- Avg Goals/game:
2.73 --- Topscorer: Van Nistelroy (United)
12 goals
(2nd group stage replaced with Round of 16)
2003/2004:
15 of 32 from top 5 leagues ---
13 games max/team --- Avg Goals/game:
2.47 --- Topscorer: Morientes (Madrid)
9 goals
2004/2005:
17 of 32 from top 5 leagues ---
13 games max/team --- Avg Goals/game:
2.66 --- Topscorer: Van Nistelroy (United)
8 goals
2005/2006:
14 of 32 from top 5 leagues ---
13 games max/team --- Avg Goals/game:
2.35 --- Topscorer: Shevchenko (Milan)
9 goals
2006/2007:
14 of 32 from top 5 leagues ---
13 games max/team --- Avg Goals/game:
2.47 --- Topscorer: Kaká (Milan)
10 goals
2007/2008:
15 of 32 from top 5 leagues ---
13 games max/team --- Avg Goals/game:
2.64 --- Topscorer: CR7 (Utd)
8 goals
2008/2009:
16 of 32 from top 5 leagues ---
13 games max/team --- Avg Goals/game:
2.63 --- Topscorer: Messi (Barca)
9 goals
2009/2010:
18 of 32 from top 5 leagues ---
13 games max/team --- Avg Goals/game:
2.54 --- Topscorer: Messi (Barca)
8 goals
2010/2011:
15 of 32 from top 5 leagues ---
13 games max/team --- Avg Goals/game:
2.84 --- Topscorer: Messi (Barca)
12 goals
2011/2012:
15 of 32 from top 5 leagues ---
13 games max/team --- Avg Goals/game:
2.76 --- Topscorer: Messi (Madrid)
14 goals
2012/2013:
16 of 32 from top 5 leagues ---
13 games max/team --- Avg Goals/game:
2.94 --- Topscorer: CR7 (Madrid)
12 goals
2013/2014:
17 of 32 from top 5 leagues ---
13 games max/team --- Avg Goals/game:
2.90 --- Topscorer: CR7 (Madrid)
17 goals
2014/2015:
16 of 32 from top 5 leagues ---
13 games max/team --- Avg Goals/game:
2.89 --- Topscorer: Messi/Neymar/CR7 (Barca/Barca/Madrid)
10 goals
2015/2016:
17 of 32 from top 5 leagues ---
13 games max/team --- Avg Goals/game:
2.78 --- Topscorer: CR7 (Madrid)
16 goals
2016/2017:
17 of 32 from top 5 leagues ---
13 games max/team --- Avg Goals/game:
3.04 --- Topscorer: CR7 (Madrid)
12 goals
2017/2018:
16 of 32 from top 5 leagues ---
13 games max/team --- Avg Goals/game:
3.21 --- Topscorer: CR7 (Madrid)
15 goals
(4th placed league gets 4th CL spot + automatic group stage for EL winner)
2018/2019:
18 of 32 from top 5 leagues ---
13 games max/team --- Avg Goals/game:
2.93 --- Topscorer: Messi (Madrid)
12 goals
2019/2020:
17 of 32 from top 5 leagues ---
13 games max/team --- Avg Goals/game:
3.21 --- Topscorer (temp): Lewy (Bayern)
10 goals
Note: obviously the current season is still in group stage so stats will vary
League rankings taken from here