Long Term Treasury Fund, VUSTX: -13.03%
Long Term Government Index Fund, VLGSX: -12.74%
Long Term Bond Index Fund, VBLTX: - 9.13%
Inflation Protected Securities Fund, VIPSX: - 8.92%
Long Term Corporate Bond Index Fund, VLTCX: - 6.86%
Long Term Investment Grade Fund, VWESX: - 5.87%
And as badly as they have performed, I don't see a net asset value for any fund which represents a bargain: they all still look too expensive to me.