Britney Spears's (Oops… I did it again) 10-best-selling downloads

And, here are Spears's (Oops… I did it again) 10-best-selling downloads (and remembering that her career predates the dawn of the digital era by a few years):
 "Womanizer," 3.5 million;
"Circus," 3.1 million;
"Till the World Ends," 2.9 million;
"3," 2.3 million;
"Toxic," 2.2 million.
"Piece of Me," 1.9 million;
"Gimme More," 1.81 million;
"I Wanna Go," 1.77 million;
"Hold It Against Me," 1.6 million;
"If U Seek Amy," 1.3 million.

Albums:
…Baby One More Time (1999), 10.6 million;
Oops!...I Did It Again (2000), 9.2 million;
Britney (2001), 4.4 million;
In the Zone (2003), 3 million;
Circus (2008), 1.7 million;
Greatest Hits: My Prerogative (2004), 1.5 million;
Blackout (2007), 1 million;
Femme Fatale (2011), 788,000;
Britney Jean (2013), 265,000;
The Singles Collection (2009), 250,000.

BILLBOARD BOXSCORE DE BRITNEY PIECE OF ME (FEBRERO 2015)

BILLBOARD BOXSCORE DE BRITNEY PIECE OF ME (FEBRERO 2015)
El Billboard Boxscore se ha actualizado con las ventas del show de Britney Spears en Las Vegas correspondiente al mes pasado.
De acuerdo con el sitio, la princesa del pop vendió $5,463,018 dólares por 13 shows realizados en febrero (4, 6, 7, 11, 13, 14, 17, 18, 20, 21, 25, 27 y 28) de 2015 con un total de 39,040 entradas vendidas de las 54,381 disponibles.