I'm home sick on a saturday night, so to keep myself occupied, decided to compile this list of the top albums from each year on PA (as of the date of this post: November 23, 2024).  The album's overall ranking, as shown in the top 250 (max number for this search) is listed by each album.

1970:   H to He Who Am The Only One by Van Der Graaf Generator, #33

1971:   Fragile by Yes, #10

1972:   Close to the Edge by Yes, #1

1973:   Selling England By the Pound by Genesis, #2

1974:   Red by King Crimson, #8

1975:   Wish You Were Here by Pink Floyd, #5

1976:   Moonmadness by Camel, #16

1977:   Animals by Pink Floyd, #9

1978:   Hemispheres by Rush, #19

1979:   Heresie by Univers Zero, #121

1980:   Permanent Waves by Rush, #63

1981:   Moving Pictures by Rush, #18

1982:   Mystical Adventures by Jean-Luc Ponty (not listed in the top 250, (though it used to be)).

1983:   Depois Do Fim by Bacamarte, #69

1984:   Uzed by Univers Zero, #114

1985:   Misplaced Childhood by Marillion, #65

1986:   Letters Home by News From Babel, (not listed in the top 250)

1987:   Clutching at Straws by Marillion, #145

1988:   Operation Mindcrime by Queesryche, #99

1989:   On Land and In The Sea by Cardiacs, #72

1990:   Slow Dance by Anthony Phillips, (not listed in the top 250 (though it used to be)).

1991:   Human by Death, #174

1992:   Hybris by Anaglagard, #29

1993:   Focus by Cynic, #240

1994:   Awake by Dream Theater, #188

1995:   Symbolic by Death, #74

1996:   Crimson by Edge of Sanity, #97

1997:   Haxan by Art Zoyd, #66

1998:   Obscura by Gorguts, #81

1999:   Metropolis Part 2 - Scenes From A Memory by Dream Theater, #36

2000:   The Perfect Element - Part 1 by Pain of Salvation, #109

2001:   Blackwater Park by Opeth, #62

2002:   In Absentia by Porcupine Tree, #71

2003:   Out of Myself by Riverside, #139

2004:   K. A. by Magma, #102

2005:   Ghost Reveries by Opeth, #67

2006:   Posthumous Silence by Sylvan, #193

2007:   Fear of a Blank Planet by Porcupine Tree, #57

2008:   Bantam to Behemoth by Birds and Buildings, #160

2009:   Anno Domini High Definition by Riverside, #116

2010:   Legacy by Hypnos 69, #222 

2011:   Grace for Drowning by Steve Wilson, #118

2012:   Viljans Oga by Anglagard, #80

2013:   The Raven That Refused to Sing (and Other Stories) by Steven Wilson, #37

2014:   The Road of Bones by IQ, #90

2015:   Hand Cannot Erase by Steven Wilson, #53

2016:   Mathematical Mother by Universal Totem Orchestra, #169

2017:   From Silence to Somewhere by Wobbler, #31

2018:   A Drop of Light by All Traps on Earth, #73

2019:   Destinazioni by Melting Clock, (not listed in top 250 (perhaps because of not enough ratings yet)).

2020:   Dwellers of the Deep by Wobbler, #54

2021:   Shamblemaths 2 by Shamblemaths, #158