2005 was the year when Billboard started to include digital songs sales to the Billboard Hot 100. This is a list of the #1 songs by year that reached #1 on the Billboard Hot 100 since 2005 and have sold at least 3 million in the US (digital sales).
Note: If you have newer and more exact figure sales (with a source) just let me know.
2005:
WEST*KANYE FEAT. JAMIE FOXX GOLD DIGGER 3 689 602
2006:
BLUNT*JAMES YOU'RE BEAUTIFUL 3 075 653
POWTER*DANIEL BAD DAY 3 523 588
SHAKIRA FEAT. WYCLEF JEAN HIPS DON'T LIE 3,581,433
TIMBERLAKE*JUSTIN FEAT. TI SEXYBACK 4 257 558
BEYONCE IRREPLACEABLE / IRREEMPLAZABLE 3 263 253
2007:
FERGIE FEAT. LUDACRIS GLAMOROUS 3 076 568
LAVIGNE*AVRIL GIRLFRIEND 3 620 929
RIHANNA FEAT. JAY-Z UMBRELLA 4.47 million
PLAIN WHITE T'S HEY THERE DELILAH 4 584 942
FERGIE BIG GIRLS DON'T CRY 3 934 366
SOULJA BOY TELL'EM CRANK THAT (SOULJA BOY) 5 028 868
WEST*KANYE STRONGER 5 107 697
BROWN*CHRIS FEAT. T-PAIN KISS KISS 3 067 267
KEYS*ALICIA NO ONE 4 million
2008:
FLO RIDA FEAT. T-PAIN LOW 7 million
LEWIS*LEONA BLEEDING LOVE 4 605 388
LIL WAYNE FEAT. STATIC MAJOR LOLLIPOP 4 698 969
Rihanna - Take a Bow: 3 million
COLDPLAY VIVA LA VIDA 6,131,000
PERRY*KATY I KISSED A GIRL 4.6 million
RIHANNA DISTURBIA 4.8 million
T.I. WHATEVER YOU LIKE 4 344 869
P!NK SO WHAT 4 616 719
T.I. FEAT. RIHANNA LIVE YOUR LIFE 4.7 million
SPEARS*BRITNEY WOMANIZER 3.5 million
BEYONCE SINGLE LADIES (PUT A RING ON IT) 5 228 754
2009:
LADY GAGA JUST DANCE 6.98 million
FLO RIDA FEAT. KE$HA RIGHT ROUND 5 475 096
LADY GAGA POKER FACE 7,21 million
BLACK EYED PEAS*THE BOOM BOOM POW 6 661 622
BLACK EYED PEAS I GOTTA FEELING 8,67 million
JAY SEAN DOWN 4 437 698
OWL CITY FIREFLIES 4 808 014
DERULO*JASON WHATCHA SAY 4 million
JAY Z + ALICIA KEYS EMPIRE STATE OF MIND 5,513,000
2010:
KE$HA TIK TOK 6,620,000
BLACK EYED PEAS*THE IMMA BE 3 859 014
CRUZ*TAIO FEAT. LUDACRIS BREAK YOUR HEART 3 806 822
Rihanna - Rude Boy: 3.04 million
B.O.B NOTHIN' ON YOU 3 135 114
USHER FEAT. WILL.I.AM OMG 4 749 825
EMINEM NOT AFRAID 5 010 672
PERRY*KATY FEAT. SNOOP DOGG CALIFORNIA GURLS 5.7 million
EMINEM FEAT. RIHANNA LOVE THE WAY YOU LIE 6.4 million
PERRY*KATY TEENAGE DREAM 4.7 million
MARS*BRUNO JUST THE WAY YOU ARE 6,283,105
FAR*EAST MOVEMENT FEAT. CATARA LIKE A G6 4 141 273
KE$HA WE R WHO WE R 4 million
Rihanna feat. Drake - What's My Name?: 3.05 million
RIHANNA ONLY GIRL (IN THE WORLD) 3.6 million
P!NK RAISE YOUR GLASS 4 149 747
PERRY*KATY FIREWORK 6.8 million
2011:
MARS*BRUNO GRENADE 5,701,000
KHALIFA*WIZ BLACK AND YELLOW 4 144 922
LADY GAGA BORN THIS WAY 4.05 million
PERRY*KATY E.T. 5.8 million
RIHANNA S&M 3.837 million
ADELE ROLLING IN THE DEEP 8,34 million
PITBULL FEAT. NE-YO, AFROJACK GIVE ME EVERYTHING 4 748 964
LMFAO FEAT. LAUREN BENNETT & G PARTY ROCK ANTHEM 8,03 million
PERRY*KATY LAST FRIDAY NIGHT (T.G.I.F.) 3.7 million
MAROON 5 FEAT. CHRISTINA AGUILERA MOVES LIKE JAGGER 6.5 million
ADELE SOMEONE LIKE YOU 5 621 328
RIHANNA FEAT. CALVIN HARRIS WE FOUND LOVE 5.4 million
2012:
LMFAO SEXY AND I KNOW IT 6 167 076
ADELE SET FIRE TO THE RAIN 4 596 063
CLARKSON*KELLY STRONGER (WHAT DOESN'T KILL YO 4.787 million
FUN. FEAT. JANELLE MONAE WE ARE YOUNG 6,830,000
GOTYE FEAT. KIMBRA SOMEBODY THAT I USED TO KNOW 7,84 million
JEPSEN*CARLY RAE CALL ME MAYBE 7,55 million
FLO RIDA WHISTLE 3 791 107
SWIFT*TAYLOR WE ARE NEVER EVER GETTING BACK 3,839,000
MAROON 5 ONE MORE NIGHT 4,635,000
RIHANNA DIAMONDS 3.52 million
MARS*BRUNO LOCKED OUT OF HEAVEN 4,750,175
2013:
MACKLEMORE & RYAN LEWIS FEAT. THRIFT SHOP 7,74 million
MARS*BRUNO WHEN I WAS YOUR MAN 4,683,308
P!NK FEAT. NATE RUESS JUST GIVE ME A REASON 4,716,347
MACKLEMORE & RYAN LEWIS FEAT. CAN'T HOLD US 4,735,069
THICKE*ROBIN FEAT. T.I. & PHAR BLURRED LINES 7,38 million
KATY PERRY - ROAR - 5,940,616
LORDE - ROYALS - 5,822,674
MILEY CYRUS - WRECKING BALL - 3.64 million
EMINEM FEAT. RIHANNA - THE MONSTER - 3.844 million
2014:
PITBULL FEAT. KE$HA - TIMBER - 4,392,347
KATY PERRY FEAT. JUICY J - DARK HORSE - 5,934,448
PHARRELL WILLIAMS - HAPPY - 6.9 million
JOHN LEGEND - ALL OF ME - 5.5 million
Iggy Azalea feat. Charlie XCX - Fancy 4,192,110
Magic! - Rude 3 million
Taylor Swift - Shake It Off 4,306,838
Meghan Trainor - "All About That Bass" 5,055,935
Taylor Swift - Blank Space 4 million
2015:
Mark Ronson feat. Bruno Mars - Uptown Funk - 6 million
Some Bonus 3 million+ digital sellers that reached #1 before 2005:
1982:
SURVIVOR EYE OF THE TIGER 3,840,000
1987:
BON JOVI LIVIN' ON A PRAYER 3,233,000
1988:
Guns N' Roses - "Sweet Child O' Mine" 3,126,000
2002:
EMINEM LOSE YOURSELF 6,531,423
2004:
USHER FEAT. LUDACRIS & LIL JON YEAH 4 million
Rihanna completely dominating
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