However, both male and female Mexicans engage in formal banking at rates less than half of the OECD average. Both men and women face challenges to growing their business in Mexico, including inadequate access to credit. However, self-employed men are more likely to be employers and to be formally registered in the tax and social security system. Self-employed women tend to be own-account w'orkers and are more likely to work informally, often as domestic workers or street vendors. Women fill 42% of seats in the Chamber of Deputies and 33.6% in the Senate, compared to 22.6% and 17.2%, respectively, in 2006.