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:
| Year | Title | Label | UK Singles Chart | U.S. Billboard Hot 100 Chart |
| --- | --- | --- | --- | --- |
| 1969 | "Melting Pot" | Philips | 3 | - |
| 1970 | "Good Morning Freedom" | Philips | 10 | - |
| 1970 | "Our World" | Philips | 17 | 64 |
| 1971 | "The Banner Man" | Regal Zonophone | 3 | - |
| 1972 | "Stay with Me" | Regal Zonophone | 11 | - |
| 1973 | "By the Devil (I Was Tempted)" | EMI | 26 | - |
| 1973 | "Randy" | EMI | 9 | - |
Question:
what is the total number of years for singles by philips label?
Answer:
3