An important determinant of the increase among two-earner households has been the rise in female labor force participation rates reflecting a declining birthrate and a desire for higher joint income with which to achieve greater material well-being as well as pursue more leisure activities. A recent Bureau of Labor Statistics survey on the use of time by Americans suggested that eating and drinking is the fifth leading activity after personal care including sleeping, working, leisure and sports, and household maintenance activities but above shopping and educational activities. The average 1.2 hours per day on eating and drinking accounted for 5 percent of a total 24-hour day, whereas sleeping consumed 36 percent. Additionally, men spend a bit more time eating and drinking than women, those over 65 years of age spent 60 percent more time eating than those in the 15 to 24 age bracket,and more time was spent in this activity on weekends than weekdays. In terms of restaurant spending by age group, the 55 to 64 segment edged out 45- to 54-year-olds for highest annual per capita spending at $1,202 and $1,094, respectively, in a 2004 National Restaurant Association survey. It is no coincidence that those are the two age categories where workers are at the height of their earning power.