Figure 2.15 is a U.S. map showing average annual rates of first use of marijuana among persons aged 18 to 25, by State, for 1999 and 2000. States listed here in alphabetical order within each group were divided into five groups based on the magnitude of their rates of first use. States in the highest group (rates of first use: 6.58 to 8.22) were Colorado, Delaware, Maine, Massachusetts, Michigan, Minnesota, Montana, New Hampshire, Oregon, and Vermont. States in the next highest group (rates of first use: 6.00 to 6.57) were Alaska, Connecticut, Kansas, Kentucky, Maryland, New Jersey, North Dakota, Rhode Island, Wisconsin, and Wyoming. States in the mid group (rates of first use: 5.47 to 5.99) were Georgia, Hawaii, Illinois, Missouri, Nebraska, Nevada, New Mexico, New York, Ohio, Pennsylvania, and Virginia. States in the next lowest group (rates of first use: 4.99 to 5.46) were Alabama, District of Columbia, Idaho, Indiana, Iowa, Mississippi, North Carolina, South Dakota, Tennessee, and Washington. States in the lowest group (rates of first use: 3.88 to 4.98) were Arizona, Arkansas, California, Florida, Louisiana, Oklahoma, South Carolina, Texas, Utah, and West Virginia.