On this day in 1981: Olivia Newton-John was enjoying her 5th consecutive week at #1 on the U.S. singles chart. This would only be the halfway point, as she would retain the #1 position for another 5 weeks (a total of 10) making it the longest running #1 song of the entire 80s decade in the U.S.

Here’s a look at the entire Top 20 on the U.S. singles chart from this day back in 1982:

1 1 PHYSICAL –•– Olivia Newton-John (MCA)-12 (5 weeks at #1) (1)
2 2 WAITING FOR A GIRL LIKE YOU –•– Foreigner (Atlantic)-11 (2)
3 5 LET’S GROOVE –•– Earth, Wind and Fire (ARC)-12 (3)
4 4 OH NO –•– The Commodores (Motown)-13 (4)
5 6 YOUNG TURKS –•– Rod Stewart (Warner Brothers)-10 (5)
6 13 I CAN’T GO FOR THAT (No Can Do) Daryl Hall & John Oates (RCA)-6 (6)
7 8 WHY DO FOOLS FALL IN LOVE –•– Diana Ross (RCA)-10 (7)
8 9 HARDEN MY HEART –•– Quarterflash (Geffen)-10 (8)
9 10 DON’T STOP BELIEVIN’ –•– Journey (Columbia)-8 (9)
10 11 LEATHER AND LACE –Stevie Nicks (with Don Henley) (Modern)-9 (10)

11 12 TROUBLE –•– Lindsey Buckingham (Asylum)-9 (11)
12 3 EVERY LITTLE THING SHE DOES IS MAGIC –•– The Police (A&M)-13 (3)
13 14 YESTERDAY’S SONGS –•– Neil Diamond (Columbia)-7 (13)
14 15 COMIN’ IN & OUT OF YOUR LIFE Barbra Streisand (Columbia)-6 (14)
15 16 TURN YOUR LOVE AROUND –George Benson (Warner Brothers)-9 (15)
16 17 THE SWEETEST THING (I’ve Ever Known) –•– Juice Newton (Capitol)-10 (16)
17 7 HERE I AM (Just When I Thought I Was Over You) –•– Air Supply (Arista)-13 (5)
18 19 TAKE MY HEART (You Can Have It If You Want It) –•– Kool and the Gang (De-Lite)-10 (18)
19 21 COOL NIGHT –•– Paul Davis (Arista)-7 (19)
20 20 OUR LIPS ARE SEALED –•– The Go-Go’s (I.R.S.)-17 (20)

‘Physical’ by Olivia Newton-John is ranked the #1 song for the entire 80s decade by ‘Billboard’ Magazine. Here are the Top 20 songs of the 80s decade as ranked by ‘Billboard:

#1- ‘Physical’ by Olivia Newton-John

#2- ‘Bette Davis Eyes’ by Kim Carnes

#3- ‘Endless Love’ by Diana Ross & Lionel Richie

#4- ‘Eye of the Tiger’ by Survivor

#5- ‘Every Breath You Take’ by The Police

#6- ‘Flashdance…What A Feeling’ by Irene Cara

#7- ‘Another One Bites the Dust’ by Queen

#8- ‘Say Say Say’ by Paul McCartney & Michael Jackson

#9- ‘Call Me’ By Blondie

#10- ‘Lady’ by Kenny Rogers

#11- ‘Centerfold’ by The J. Geils Band

#12- ‘(Just Like) Starting Over’ by John Lennon

#13- ‘I Love Rock n’ Roll’ by Joan Jett & the Blackhearts

#14- ‘Ebony & Ivory’ by Stevie Wonder & Paul McCartney

#15- ‘That’s What Friends Are For’ by Dionne & Friends

#16- ‘Upside Down’ by Diana Ross

#17- ‘Billie Jean’ by Michael Jackson

#18- ‘Abracadabra’ by The Steve Miller Band

#19- ‘Say You, Say Me’ by Lionel Richie

#20- ‘All Night Long (All Night)’ by Lionel Richie

**Fun Fact: All of the Top 20 songs of the decade were in the 1980-1986 range. NO songs from 1987-1989 appear in the Top 20. Eventually, at #23 ‘Another Day In Paradise’ by Phil Collins would represent the last third of the decade. In the Top 40 songs of the decade (ranked by Billboard), 1987-1989 is only represented by ‘Another Day In Paradise’ by Phil Collins (#23), ‘Faith’ by George Michael (#29) and ‘Miss You Much’ by Janet Jackson (#39)!