Of course, marital rape (which was legal in the US until a few years ago (1993)) is barely reported in the US as well: "Since marital rape is not a crime, exact statistics are hard to come by. The limited data that is available, however, provides a horrifying glimpse into the enormity of the problem.
Last year, the United Nations Population Fund and the International Center for Research on Women surveyed more than 9,200 men across seven Indian states. One-third of them admitted to having forced a sexual act on their wives, while 60 percent said they’d used some form of violence to assert dominance over their partners.
Another 2014 report, by researcher Aashish Gupta of the Rice Institute, found that women are 40 times more likely to be sexually assaulted by their husband than a stranger. Gupta concluded that fewer than 1 percent of sexual assaults within marriage are reported to police.
Meenakshi Ganguly, South Asia director at Human Rights Watch, told HuffPost that marital rape is one of the most underreported crimes, "often because women will regard this as an unpleasant part of their marital duties.""
