text: Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
  ### Context:
  CREATE TABLE table_29789_3 (_percentage_change VARCHAR, international_tourism_expenditure_2012 VARCHAR)
  ### Question:
  How many countries spent $83.7 billion on international tourism in 2012?
  ### Answer:
  SELECT COUNT(_percentage_change) FROM table_29789_3 WHERE international_tourism_expenditure_2012 = "$83.7 billion"