Determine the code to open the briefcase

[admin]

Doug had forgotten the 5 digit code to his briefcase. However, he did remember five clues:

   1. The fifth number plus the third number equals fourteen;
   2. The fourth number is one more than the second number;
   3. The first number is one less than twice the second number;
   4. The second number plus the third number equals ten; and
   5. The sum of all five numbers is 30.

What were the five numbers and in what order?