Concentration in Health Insurance Markets
This interactive chart provides details on 1) enrollment in the overall individual market and the individual exchanges as measured by covered life-years, and 2) covered life-years in each state's individual exchange as a proportion of covered life-years in the overall individual market from 2015 through 2022.
Oregon
Source: GAO analysis of data from the Centers for Medicare & Medicaid Services (CMS). | GAO-25-107194
The table below displays data for the selected state. Click here to download the data used in this graphic.
| State | Year | Covered life-years, individual exchange | Covered life-years, individual market | Individual exchange covered life-years as a proportion of overall individual market (%) |
|---|---|---|---|---|
| Oregon | 2015 | 91,217 | 236,779 | 39 |
| Oregon | 2016 | 121,306 | 231,602 | 52 |
| Oregon | 2017 | 125,377 | 210,931 | 59 |
| Oregon | 2018 | 127,540 | 189,859 | 67 |
| Oregon | 2019 | 125,099 | 176,422 | 71 |
| Oregon | 2020 | 126,256 | 174,046 | 73 |
| Oregon | 2021 | 127,020 | 171,568 | 74 |
| Oregon | 2022 | 130,324 | 171,088 | 76 |
- We calculated the size of each market from 2015 through 2022 using covered life-years that issuers reported to Centers for Medicare & Medicaid Services or states. This measure is calculated as the average number of lives insured each month in the reporting year. Rather than a point-in-time measurement, this measure accounts for changes in enrollment that occur throughout the year.
- Covered life-years is one of several ways to measure health insurance enrollment, so it may differ from other measures of market size.
- We rounded market share values of less than 0.5 percent to zero.