Read my Lips
Asked how he estimates his wealth, T. Rump said "My net worth goes up and down based upon my own feelings, which can change rapidly from day to day."
Some people crunch numbers. I crunch feelings. (Especially if someone says something bad about me.)
2004 was an especially manic/depressive time for T. Rump, with his own estimates of his wealth swinging wildly from $1.7 billion to $9.5 billion.