| 1 | A | B | C | D | E | F | G | H | I | J | K | L | M |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 2 | as main performer |  |  |  |  |  |  |  |  |  |  |  |  |
| 3 | year | single | peak chart positions |  |  |  |  |  |  |  |  |  | album |
| 4 |  |  | us | us r&b | us dan | us a/c | aus | can | ire | nld | nz | uk |  |
| 5 | 1987 | love/hate | - | - | 34 | - | - | - | - | - | - | - | pebbles |
| 6 |  | girlfriend | 5 | 1 | 24 | - | 86 | 17 | 9 | 23 | 22 | 8 |  |
| 7 | 1988 | mercedes boy | 2 | 1 | 2 | - | - | 14 | - | 39 | 50 | 42 |  |
| 8 |  | take your time | - | 3 | 41 | - | - | - | - | - | - | - |  |
| 9 |  | do me right | - | 67 | - | - | - | - | - | - | - | - |  |
| 10 | 1990 | giving you the benefit | 4 | 1 | 10 | - | 48 | 32 | - | 32 | 26 | 73 | always |
| 11 |  | love makes things happen | 13 | 1 | - | 24 | - | 91 | - | - | - | - |  |
| 12 | 1991 | backyard | 73 | 4 | - | - | - | - | - | - | - | - |  |
| 13 |  | always | - | 13 | - | - | - | - | - | - | - | - |  |
| 14 | 1995 | are you ready? | - | 38 | - | - | - | - | - | - | - | - | straight from my heart |
| 15 | 2008 | let freedom reign | - | - | - | - | - | - | - | - | - | - | prophetic flows vol. i & ii |
| 16 |  | healing waters | - | - | - | - | - | - | - | - | - | - | non-album single |
| 17 | "-" denotes a recording that did not chart or was not released in that territory |  |  |  |  |  |  |  |  |  |  |  |  |

Question: when did the single always release?
Answer: 1991