The initial cost estimate for the system was $25 billion over 12 years; it ended up costing $114 billion (adjusted for inflation, $425 billion in 2006 dollars) and took 35 years.
Итоговая стоимость составила 114 млрд $ (425 млрд $ в ценах 2006 года с учетом инфляции) и заняло 35 лет.