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 |
| --- | --- | --- | --- | --- | --- | --- | --- |
| 1.0 | No | 216545.0 | 296008.0 | 42.25% | Yes | LEG | Salaries of State Legislators |
| 3.0 | YES | 397625.0 | 128685.0 | 75.55% | No | LEG | Mental Hospital In or Near Portland |
| 4.0 | YES | 251078.0 | 230770.0 | 52.11% | Yes | LEG | Constitutional Amendments—How Proposed by People |
| 5.0 | No | 208419.0 | 264569.0 | 44.06% | Yes | LEG | State Property Tax |
| 6.0 | No | 252305.0 | 300007.0 | 45.68% | No | Init | Establishing Daylight Saving Time |
| 7.0 | No | 232775.0 | 278805.0 | 45.50% | No | Init | Prohibiting Certain Fishing in Coastal Streams |
Question:
How many ballot measures had a percentage yes of 52.11%?
Answer:
1.0