Oklahoma

16,186

1990

II

Oregon

-

<1969

III

Pennsylvania

92,292

>2006

III

Rhode Island

-

-

III

South Carolina

55,000

>2006

III

South Dakota

21,923

1997

III

Tennessee

7538

1979

II

Texas

73,333

>2006

III

Utah

-

>2006

III

Vermont

26,429

1998/9

IV

Virginia

22,857

1993

II

Washington

85,429

>2006

III

West Virginia

14,359

1990

II

Wisconsin

-

-

III

Wyoming

-

-

III