Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| meas. num. | passed | YES votes | NO votes | % YES | Const. Amd.? | type | description |
| --- | --- | --- | --- | --- | --- | --- | --- |
| 2.0 | YES | 342138.0 | 269467.0 | 55.94% | Yes | LEG | Automatic Adoption, Federal Income Tax Amendments |
| 4.0 | YES | 332188.0 | 268588.0 | 55.29% | Yes | LEG | Investing Funds Donated to Higher Education |
| 5.0 | YES | 481031.0 | 133564.0 | 78.27% | Yes | LEG | Veterans' Loan Amendment |
| 6.0 | YES | 436897.0 | 158409.0 | 73.39% | Yes | LEG | Limits Term of Defeated Incumbents |
| 8.0 | YES | 352771.0 | 260100.0 | 57.56% | Yes | LEG | Allows Penal Institutions Anywhere in Oregon |
| 9.0 | YES | 406315.0 | 214243.0 | 65.48% | No | Init | Scenic Waterways Bill |
| 10.0 | No | 223735.0 | 405437.0 | 35.56% | Yes | Init | New Property Tax Bases for Schools |
Question:
How many measures numbered 8 were a constitutional ammendment?
Answer:
1.0