Health insurance in the United States Managed care Rise of managed care in the US

| Year_ | Conventional_plans | HMOs | PPOs | POS_plans |
|---|---|---|---|---|
| 1998 | 14% | 27% | 35% | 24% |
| 1999 | 10% | 28% | 39% | 24% |
| 2000 | 8% | 29% | 42% | 21% |
| 2001 | 7% | 24% | 46% | 23% |
| 2002 | 4% | 27% | 52% | 18% |
| 2003 | 5% | 24% | 54% | 17% |
| 2004 | 5% | 25% | 55% | 15% |
| 2005 | 3% | 21% | 61% | 15% |
| 2006 | 3% | 20% | 60% | 13% |
| 2007 | 3% | 21% | 57% | 15% |
| 2008 | 2% | 20% | 58% | 12% |