Negative real yield off 5year treasuries

Daily Treasury Real Yield Curve Rates

DATE	5 YR	7 YR	10 YR	20 YR	30 YR
03/01/11	-0.06	0.57	1.00	1.63	1.94
03/02/11	-0.09	0.54	1.01	1.64	1.94
03/03/11	0.03	0.64	1.09	1.69	2.00
03/04/11	-0.07	0.55	1.00	1.62	1.94
03/07/11	-0.07	0.55	1.00	1.62	1.93
03/08/11	-0.09	0.55	1.01	1.64	1.95
03/09/11	-0.09	0.55	0.98	1.61	1.92
03/10/11	-0.17	0.46	0.91	1.53	1.85
03/11/11	-0.11	0.52	0.96	1.58	1.89
03/14/11	-0.15	0.49	0.93	1.57	1.89
03/15/11	-0.16	0.47	0.93	1.56	1.87
03/16/11	-0.22	0.42	0.85	1.49	1.80
03/17/11	-0.27	0.39	0.82	1.47	1.79
03/18/11	-0.22	0.44	0.85	1.49	1.80
03/21/11	-0.16	0.49	0.90	1.52	1.83
03/22/11	-0.12	0.54	0.95	1.55	1.85
03/23/11	-0.09	0.57	0.98	1.58	1.88

Just noticed it, so entities are now paying to lend to the US. Who're the people going for this?