13th September 1978: Singing and dancing, actor John Travolta struts his stuff in the hit musical film 'Grease', a romantic comedy set in the 1950's rock 'n' roll era, in which Travolta stars with Olivia Newton-John. (Photo by Central Press/Getty Images)

Class of 1975, here’s what was going on the year you graduated:

The Captain & Tennille shot to the top of the Billboard charts with their number one hit “Love Will Keep Us Together”.

According to Nielsen Ratings, these were the Top 10 TV shows

1. All in the Family (CBS)
2. Rich Man, Poor Man (ABC)
3. Laverne & Shirley (ABC)
4. Maude (CBS)
5. The Bionic Woman (ABC)
6. Phyllis (CBS)
7. Sanford and Son (NBC)
8. Rhoda (CBS)
9. The Six Million Dollar Man (ABC)
10. ABC Monday Night Movie (ABC)
11. Happy Days (ABC)

The top movies at the box office were “Jaws”, “One Flew Over The Cuckoo’s Nest” and “Breakout”.

The “Mood Ring” was an enormous fad.

Microsoft was founded by Bill Gates and Paul Allen in Albuquerque, New Mexico.

The Top 10 Billboard Hits of 1975

“Love Will Keep Us Together” – Captain & Tennille

“Rhinestone Cowboy” – Glen Campbell

“Philadelphia Freedom” – Elton John

“Before the Next Teardrop Falls” – Freddy Fender

“My Eyes Adored You” – Frankie Valli

“Shining Star” – Earth, Wind and Fire

“Fame” – David Bowie

“Laughter in the Rain” – Neil Sedaka

“One of these Nights” – Eagles

“Thank God I’m a Country Boy” – John Denver

Class of 1976, here’s what was going on the year you graduated:

“Silly Love Songs” by Wings was the number one song of the year, according to Billboard.

The biggest movies at the box office were “Rocky”, “To Fly” and “A Star Is Born”.

The price of a dozen eggs was 69 cents.

“Stretch Armstrong” was a huge hit for kids at Christmas.

Sylvester Stallone wrote the script to “Rocky” in three-and-a-half days, by hand.

The Top 10 Billboard hits of 1976

“Silly Love Songs” – Wings

“Don’t Go Breaking My Heart” – Elton John and Kiki Dee

“Disco Lady” – Johnny Taylor

“December, 1963 (Oh, What a Night) – The Four Seasons

“Play That Funky Music” – Wild Cherry

“Love Machine” – The Miracles

“50 Ways To Leave Your Lover” – Paul Simon

“Love is Alive” – Gary Wright

“A Fifth of Beethoven” – Walter Murphy and The Big Apple Band

Class of 1977, here’s what was going on the year you graduated:

Rod Stewart had the number one hit of the year on the Billboard charts with “Tonight’s the Night (Gonna Be Alright).

“Star Wars”, “Smokey and the Bandit” and “Saturday Night Fever” were smash hits at movies theaters.

LA Dodgers Glenn Burke and Dusty Baker started what has become known as “The High Five”.

An ounce of gold was $161.10. Today it’s $1,291.

The Top 10 Billboard hits of 1977

“Tonight’s the Night (Gonna Be Alright)” – Rod Stewart

“I Just Want To Be Your Everything” – Andy Gibb

“Best of My Love” – The Emotions

“Evergreen (Love Theme From A Star Is Born) – Barbra Streisand

“Angel in Your Arms” – Hot

“I Like Dreamin” – Kenny Nolan

“Don’t Leave Me This Way” – Thelma Houston

“(Your Love Has Lifted Me) Higher and Higher” – Rita Coolidge

“Undercover Angel” – Alan O’Day

“Torn Between Two Lovers” – May MacGregor

Class of 1978, here’s what was going on the year you graduated:

Heartthrob Andy Gibb soared to number one one the Billboard charts with “Shadow Dancing”.

“Grease”, “National Lampoon’s Animal House” and “Jaws 2” were big hits at movie theaters.

Minimum wage was $2.65 an hour.

The first “Star Wars” action figures were released.

In the movie “Saturday Night Fever”, the legendary dance floor scene song was supposed to be “Lowdown” by Boz Scaggs. However, Columbia Records wouldn’t approve it and it was replaced with “Stayin’ Alive” by the Bee Gees.

The Billboard Top 10 hits of 1978:

“Shadow Dancing” – Andy Gibb

“Night Fever” – The Bee Gees

“You Light Up My Life” – Debby Boone

“Stayin’ Alive” – the Bee Gees

“Kiss You All Over” – Exile

“How Deep Is Your Love” – The Bee Gees

“Baby Come Back” – Player

“(Love Is) Thicker Than Water” – Andy Gibb

“Boogie Oogie Oogie” – A Taste Of Honey

“Three Times a Lady” – The Commodores

Class of 1979, here’s what was going on the year you graduated:

“My Sharona” by “The Knack” was Billboard’s top song of the year.

The top movies at the box office were “Kramer vs. Kramer”, “Superman” and “The Amityville Horror”

A gallon of gas cost 88 cents.

The Strawberry Shortcake doll went on sale.

The world population was 4.3 billion. Today, it’s 7.6 billion.

Top 10 Billboard hits of 1979:

“My Sharona” – The Knack

The Knack - "My Sharona" (Official Video) HD

Official music video for "My Sharona" (HD Reality Bites Movie Version) by American classic/new wave rock band The Knack. © 1979, 1994 RCA Records/BMG Music Entertainment. "Reality Bites (1994) - Soundtrack" https://youtu.be/xDYGo0UgIVM http://www.theknack.com

“Bad Girls” – Donna Summer

“Le Freak” – Chic

“Do Ya Think I’m Sexy” – Rod Stewart

“Reunited” – Peaches and Herb

“I Will Survive” – Gloria Gaynor

“Hot Stuff” – D0nna Summer

“Y.M.C.A” – The Village People

“Ring My Bell” – Anita Ward

“Sad Eyes” – Robert John