"Kusama is the only one of our artists who sells on every continent. She's very rare in that she has this kind of credibility within the art world establishment, but she also has a very broad popular appeal," Glenn Scott Wright, co-director of Victoria Miro, told the Independent.
The Japanese artist's shows in Rio de Janeiro, Sao Paulo and Brasilia were among the 20 most popular of the year, averaging 7957 to 8936 visitors a day. Koons' exhibition at the Whitney Museum of American Art attracted 3869 a day.
Kusama rose to prominence in the 1960s when she rubbed shoulders with artists such as Andy Warhol and Claes Oldenberg. In 2013, audiences queued for eight hours in New York to spend 45 seconds in one of her "infinity rooms" created from light and mirrors. Tate Modern had a successful Kusama show in early 2012.
Taiwan's National Palace Museum hosted the three most popular exhibitions of 2014, topped by Great Masters of the Ming Dynasty: Tang Yin, which attracted 1.1 million people - or 12,800 a day.