I found this article that details the changes since 1997. Its quite a bit.
http://www.jsonline.com/story/index.aspx?id=412441Here are some of the details as it relates to trees:
No. 1, 400 yards in 1997, 455 yards in 2006
2002: Tee moved back 20-25 yards. Fairway bunker reshaped and extended 10-15 yards toward the green. Portion of fairway landing area regraded.
2006: Tee moved back 15-20 yards. Trees added to left side of fairway.
No. 7, 360 yards in 1997, 450 yards in 2006
2002: Tee moved back 40-45 yards. Portion of fairway landing area regraded.
2006: Tee moved back 35-40 yards. Green re-grassed to create possible right-rear flagstick location. Trees added to both sides of the fairway.
No. 11, 455 yards in 1997, 505 yards in 2006
1999: Green, pond and bunker complex adjusted.
2002: Tee moved back 30-35 yards and shifted 5 yards to right. Portion of fairway landing area regraded.
2004: Thirty-six pine trees added to right side of fairway.
2006: Tee moved back 10-15 yards. Trees added to right side of fairway and fairway shifted to the left.
No. 15, 500 yards in 1997, 530 yards in 2006
1999: Fairway mounds reduced and pine trees added to right and left.
2006: Tee moved back 30-35 yards and shifted approximately 20 yards to left.
No. 17, 400 yards in 1997, 440 yards in 2006
1999: Tee moved back 25 yards.
2006: Tee moved back 10-15 yards.
(It doesn't mention trees here but we know they are there as apart of the trees added to 15)No. 18, 405 yards in 1997, 465 yards in 2006
2002: Tee moved back 55-60 yards and shifted 5 yards to right. Bunker complex adjusted, making bunkers approximately 10% larger. Trees added left of fairway bunkers. Green re-grassed and expanded to recover lost edges.
Are there trees left of the bunkers on 18? That doesn't seem right.