Twenty years ago this week, Billboard magazine introduced it's Pop Songs chart.  The chart measures radio airplay as opposed to sales.  To celebrate 20 years, they rounded up the 100 biggest hits ever on that chart, based on how high they climbed and how long they stuck around.  The #1 biggest hit ever is "Iris" by the Goo Goo Dolls.  Thing back to 1998 when that song first debuted on radio.  Remember hearing it like every 20 minutes?  The song appeared on the City of Angels soundtrack.   Enjoy the clip above.

Here's the rest of the list.   Some of my all-time favorite songs are on this list.

100 IN MY HEAD Jason Derulo (2010)

99 AIRPLANES B.o.B Featuring Hayley Williams (2010)

98 SEXY AND I KNOW IT LMFAO (2011)

97 GRENADE Bruno Mars (2011)

96 TAKE A BOW Rihanna (2008)

95 FIREWORK Katy Perry (2010)

94 AGAIN Lenny Kravitz (2001)

93 BREAKAWAY Kelly Clarkson (2004)

92 OVER AND OVER Nelly Featuring Tim McGraw (2004)

91 SOMEDAY Nickelback (2004)

90 PAYPHONE Maroon 5 Featuring Wiz Khalifa (2012)

89 HIPS DON'T LIE Shakira Featuring Wyclef Jean (2006)

88 CHECK ON IT Beyonce Featuring Slim Thug (2006)

87 UNWRITTEN Natasha Bedingfield (2006)

86 SHE WILL BE LOVED Maroon 5 (2004)

85 I'M REAL Jennifer Lopez Featuring Ja Rule (2001)

84 WITHOUT YOU David Guetta Featuring Usher (2011)

Tie 82 THIS LOVE Maroon 5 (2004)

Tie 82 SAY IT RIGHT Nelly Furtado (2007)

81 MY LOVE Justin Timberlake Featuring T.I. (2006)

80 GLAD YOU CAME The Wanted (2012)

79 STICKWITU The Pussycat Dolls (2006)

78 NO ONE Alicia Keys (2008)

77 BYE BYE BYE 'N Sync (2000)

76 I KNOW Dionne Farris (1995)

75 E.T. Katy Perry Featuring Kanye West (2011)

74 AS LONG AS YOU LOVE ME Backstreet Boys (1998)

73 COMPLICATED Avril Lavigne (2002)

72 EVERYTHING YOU WANT Vertical Horizon (2000)

Tie 70 FOREVER Chris Brown (2008)

Tie 70 JUST DANCE Lady Gaga Featuring Colby O'Donis (2009)

69 EVERY MORNING Sugar Ray (1999)

68 PROMISCUOUS Nelly Furtado Featuring Timbaland (2006)

67 HOT N COLD Katy Perry (2008)

66 GENIE IN A BOTTLE Christina Aguilera (1999)

65 BENT matchbox twenty (2000)

64 I GOTTA FEELING The Black Eyed Peas (2009)

63 DON'T TURN AROUND Ace Of Base (1994)

62 STAY (I MISSED YOU) Lisa Loeb & Nine Stories (1994)

61 ALL STAR Smash Mouth (1999)

60 SAVE TONIGHT Eagle-Eye Cherry (1999)

59 TWO PRINCES Spin Doctors (1993)

58 MISSING Everything But The Girl (1996)

57 DJ GOT US FALLIN' IN LOVE Usher Featuring Pitbull (2010)

56 DYNAMITE Taio Cruz (2010)

55 WALKIN' ON THE SUN Smash Mouth (1998)

54 BOOM BOOM POW The Black Eyed Peas (2009)

53 I KNEW I LOVED YOU Savage Garden (2000)

52 JUST A DREAM Nelly (2010)

51 LOVEFOOL The Cardigans (1997)

50 BAD ROMANCE Lady Gaga (2010)

49 FAR AWAY Nickelback (2006)

48 THE SIGN Ace Of Base (1994)

47 HEY YA! OutKast (2003)

46 BEHIND THESE HAZEL EYES Kelly Clarkson (2005)

45 SEMI-CHARMED LIFE Third Eye Blind (1997)

44 3 AM matchbox 20 (1998)

43 YOU BELONG WITH ME Taylor Swift (2009)

42 WHERE IS THE LOVE? The Black Eyed Peas (2003)

41 GOOD FEELING Flo Rida (2012)

40 DON'T LET GO (LOVE) En Vogue (1996)

39 BIG GIRLS DON'T CRY Fergie (2007)

38 FLY Sugar Ray (1997)

37 JUST THE WAY YOU ARE Bruno Mars (2010)

36 WE BELONG TOGETHER Mariah Carey (2005)

Tie 34 GIVE ME EVERYTHING Pitbull Featuring Ne-Yo, Afrojack & Nayer (2011)

Tie 34 WHATCHA SAY Jason Derulo (2009)

33 GIVES YOU HELL The All-American Rejects (2009)

32 WITH ARMS WIDE OPEN Creed (2000)

31 RUN IT! Chris Brown (2005)

30 YOU WERE MEANT FOR ME Jewel (1997)

29 THE REASON Hoobastank (2004)

28 STEREO HEARTS Gym Class Heroes Featuring Adam Levine (2011)

27 BLEEDING LOVE Leone Lewis (2008)

26 TORN Natalie Imbruglia (1998)

25 KRYPTONITE 3 Doors Down (2000)

24 NAME Goo Goo Dolls (1995)

23 LEAVIN' Jesse McCartney (2008)

22 DOWN Jay Sean Featuring Lil Wayne (2009)

21 YEAH! Usher Featuring Lil Jon & Ludacris (2004)

20 PARTY ROCK ANTHEM LMFAO Featuring Lauren Bennett & GoonRock (2011)

19 THE WAY I ARE Timbaland Featuring Keri Hilson (2007)

18 MOVES LIKE JAGGER Maroon 5 Featuring Christina Aguilera (2011)

17 BECAUSE OF YOU Kelly Clarkson (2005)

16 ...BABY ONE MORE TIME Britney Spears (1999)

 15 TIK TOK Ke$ha (2010)

14 I LOVE YOU ALWAYS FOREVER Donna Lewis (1996)

13 LOW Flo Rida Featuring T-Pain (2008)

12 WE FOUND LOVE Rihanna Featuring Calvin Harris (2011)

11 HOW YOU REMIND ME Nickelback (2001)

 10 SINCE U BEEN GONE Kelly Clarkson (2005)

9 SLIDE Goo Goo Dolls (1999)

8 HERE WITHOUT YOU 3 Doors Down (2003)

7 DON'T SPEAK No Doubt (1996)

6 TRULY MADLY DEEPLY Savage Garden (1998)

5 SMOOTH Santana Featuring Rob Thomas (1999)

4 HANGING BY A MOMENT Lifehouse (2001)

3 APOLOGIZE Timbaland Featuring One Republic (2008)

2 ANOTHER NIGHT Real McCoy (1994)

1 IRIS Goo Goo Dolls (1998)

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