Region

Surveys by Year

 Nationwide

2011 (intercept; intercept-based mail follow-up;
license frame mail survey), 2006 (intercept; intercept-based mail follow-up; licence frame mail survey)
licence frame mail survey

 Caribbean

2004 (intercept; phone follow-up; area questions)

 Northeast

1998 (intercept; phone follow-up; RDD)

 Pacific Coast

2000 (intercept; phone follow-up; RDD)

 Southeast

2003 (trip expenditures only), 1999 (intercept; phone follow-up; RDD)