Madonna is known for her works that explore religious symbolism and sexual themes which also drew criticism from the Vatican in the late 1980s. In 1992, she founded an entertainment company, Maverick, which published a book of photographs.These works generated negative publicity and coincided with a fall in commercial sales in the 1990s. Madonna's career was revived in 1998, when the release of her album Ray of Light garnered critical acclaim. She subsequently made four consecutive number-one studio albums. She is also proved to be a success on the Billboard charts, having 12 No.1's at the Hot 100 chart and and 39 No.1's on the Hot Dance Chart.