Treebeard's Stumper

Crunching 1999
Here's a repeat of last year's winter vacation challenge. Use just the four digits 1, 9, 9, 9 in that order, with parentheses and any standard math operations, to make all the numbers from 1 to 100. For starters,
1 = 1+(99)x9 (+,, x, and /) 2 = (1^9)+(9/9) (^ is the power of) 3 = 1+sqrt(9)(9/9) (square root) 4 = 1+sqrt(9)!(9/9) (factorial, 3!=1x2x3=6) We've managed to get all the numbers using the digits of 1997 and 1998. Can we do it again this year?
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