Here's what I put together so far:
1987:
1) Bathory - Under the Sign of the Black Mark | 91 from 14 votes
2) Voivod - Killing Technology | 89.5 from 13 votes
3) Death - Scream Bloody Gore | 76 from 15 votes
4) Candlemass - Nightfall | 70.5 from 12 votes
5) King Diamond - Abigail | 69 from 10 votes
6) Savatage - Hall of the Mountain King | 64 from 8 votes
7) Dark Quarterer - Dark Quarterer | 60 from 9 votes
=8) Dream Death - Journey into Mystery | 56 from 12 votes
=8) Sepultura - Schizophrenia | 56 from 9 votes
10) Sarcófago - I.N.R.I. | 54 from 9 votes
https://www.ultimatemetal.com/forum/threads/gmd-poll-top-ten-albums-of-1987.1261526/page-8
1997:
1) Deströyer 666 - Unchain the Wolves | 60 from 10 votes
2) Aeternus - Beyond the Wandering Moon | 59 from 7 votes
3) Megadeth - Cryptic Writings | 44 from 7 votes
4) Emperor - Anthems to the Welkin at Dusk | 42 from 7 votes
5) Electric Wizard - Come My Fanatics... | 37 from 6 votes
6) Empyrium - Songs of Moors and Misty Fields | 36 from 4 votes
7) Ulver - Nattens madrigal | 34 from 6 votes
=8) Grand Belial's Key - Mocking the Philanthropist | 32 from 4 votes
=8) In the Woods... - Omnio | 32 from 4 votes
10) Spastic Ink - Ink Complete | 30 from 4 votes
https://www.ultimatemetal.com/forum/threads/gmd-poll-top-ten-albums-of-1997.1414251/page-16
1998:
1) The Chasm - Deathcult For Eternity: The Triumph | 105.75 from 13 votes
2) Bruce Dickinson - The Chemical Wedding | 78.75 from 10 votes
3) Runemagick - The Supreme Force of Eternity | 69.5 from 14 votes
4) Bolt Thrower - Mercenary | 57 from 9 votes
5) Aeternus - ...And So the Night Became | 56 from 12 votes
6) Gorguts - Obscura | 55.75 from 9 votes
7) Solstice - New Dark Age | 54 from 10 votes
8) Nile - Amongst the Catacombs of Nephren-Ka | 48 from 9 votes
9) Death - The Sound of Perseverance | 46.75 from 6 votes
10) Solitude Aeturnus - Adagio | 43.5 from 6 votes
https://www.ultimatemetal.com/forum/threads/gmd-poll-top-ten-albums-of-1998.1201461/page-26
1999:
1) Sabbat - Karisma | 52 from 7 votes
2) Immolation - Failures for Gods | 42 from 8 votes
3) Agalloch - Pale Folklore | 37 from 8 votes
=4) Slough Feg - Twilight of the Idols | 36 from 5 votes
=4) Summoning - Stronghold | 36 from 5 votes
6) Nox Intempesta - Damnanus Dominum | 32 from 4 votes
7) Type O Negative - World Coming Down | 31 from 4 votes
8) Windir - Arntor | 30 from 6 votes
9) Sore Plexus - HaPTePHobiC | 27 from 3 votes
10) Immortal - At the Heart of Winter | 26 from 5 votes
https://www.ultimatemetal.com/forum/threads/gmd-poll-top-ten-albums-of-1999.1294226/page-9
2000:
1) Slough Feg - Down Among the Deadmen | 99 from 15 votes
2) Immolation - Close to a World Below | 94 from 14 votes
3) The Chasm - Procession to the Infraworld | 92 from 13 votes
4) Deströyer 666 - Phoenix Rising | 72 from 13 votes
5) Nile - Black Seeds of Vengeance | 60 from 11 votes
6) Primordial - Spirit the Earth Aflame | 54 from 8 votes
7) Mortuary Drape - Tolling 13 Knell | 53 from 8 votes
8) Iron Maiden - Brave New World | 50 from 8 votes
9) Decapitated - Winds of Creation | 40 from 5 votes
10) Quicksand Dream - Aelin: A Story About Destiny | 36 from 6 votes
https://www.ultimatemetal.com/forum/threads/gmd-poll-top-ten-albums-of-2000.1171495/page-25
2001:
1) Grand Belial's Key - Judeobeast Assassination | 57.5 from 7 votes
2) Windir - 1184 | 43 from 7 votes
3) Gorguts - From Wisdom to Hate | 36 from 6 votes
4) Absu - Tara | 33.5 from 6 votes
5) Opeth - Blackwater Park | 30 from 5 votes
6) Bolt Thrower - Honour - Valour - Pride | 29 from 5 votes
=7) Sodom - M-16 | 28 from 4 votes
=7) System of a Down - Toxicity | 28 from 4 votes
=9) Summoning - Let Mortal Heroes Sing Your Fame | 27 from 5 votes
=9) Hammers of Misfortune - The Bastard: A Tale Told in Three Acts | 27 from 4 votes
https://www.ultimatemetal.com/forum/threads/gmd-poll-top-ten-albums-of-2001.1574126/page-6
2002:
1) The Chasm - Conjuration of the Spectral Empire | 83 from 9 votes
2) Agalloch - The Mantle | 69 from 9 votes
3) Reverend Bizarre - In the Rectory of the Bizarre Reverend | 57 from 10 votes
4) Immolation - Unholy Cult | 53 from 10 votes
5) Deströyer 666 - Cold Steel...for an Iron Age | 48 from 7 votes
6) Doomsword - Resound the Horn| 42 from 7 votes
7) Arcturus - The Sham Mirrors | 39 from 7 votes
8) Arghoslent - Incorrigible Bigotry | 37 from 6 votes
9) Opeth - Deliverance | 34 from 5 votes
=10) Meshuggah - Nothing | 31 from 4 votes
=10) Negura Bunget - 'N Crugu Bradului | 31 from 4 votes
=10) Manilla Road - Spiral Castle | 31 from 6 votes
https://www.ultimatemetal.com/forum/threads/gmd-poll-top-ten-albums-of-2002.1507667/page-11