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:
| Date | Opponent | Venue | Result | Attendance | Scorers |
| --- | --- | --- | --- | --- | --- |
| 15 August 1987 | Derby County | Away | 0–1 | 17,204 | — |
| 18 August 1987 | Coventry City | Home | 0–1 | 09,380 | — |
| 22 August 1987 | West Ham United | Home | 2–2 | 08,073 | Harford (2) |
| 29 August 1987 | Chelsea | Away | 0–3 | 16,075 | — |
| 31 August 1987 | Arsenal | Home | 1–1 | 08,745 | Wilson (pen) |
| 5 September 1987 | Oxford United | Away | 5–2 | 06,804 | Breacker, Harford, Hill, Nwajiobi, B. Stein |
| 12 September 1987 | Everton | Home | 2–1 | 08,124 | Hill, B. Stein |
| 19 September 1987 | Charlton Athletic | Away | 0–1 | 05,002 | — |
| 26 September 1987 | Queens Park Rangers | Away | 0–2 | 11,175 | — |
| 3 October 1987 | Manchester United | Home | 1–1 | 09,137 | Harford |
| 10 October 1987 | Portsmouth | Away | 1–3 | 12,391 | Harford (pen) |
| 17 October 1987 | Wimbledon | Home | 2–0 | 07,018 | B. Stein, Wilson |
| 24 October 1987 | Liverpool | Home | 0–1 | 11,997 | — |
| 7 November 1987 | Newcastle United | Home | 4–0 | 07,638 | Nwajiobi, B. Stein, M. Stein (2) |
| 14 November 1987 | Sheffield Wednesday | Away | 2–0 | 16,960 | Allinson, M. Stein |
| 21 November 1987 | Tottenham Hotspur | Home | 2–0 | 10,091 | Allinson (2) |
| 5 December 1987 | Norwich City | Home | 1–2 | 07,002 | B. Stein |
| 12 December 1987 | Watford | Away | 1–0 | 12,152 | Foster |
| 18 December 1987 | Southampton | Home | 2–2 | 06,618 | Harford, McDonough |
| 26 December 1987 | Everton | Away | 0–2 | 32,128 | — |
| 28 December 1987 | Charlton Athletic | Home | 1–0 | 07,243 | Wilson |
| 1 January 1988 | Chelsea | Home | 3–0 | 08,018 | Harford, B. Stein, M. Stein |
| 2 January 1988 | West Ham United | Away | 1–1 | 16,716 | M. Stein |
| 16 January 1988 | Derby County | Home | 1–0 | 07,175 | McDonough |
| 6 February 1988 | Oxford United | Home | 7–4 | 08,063 | Harford (2), McDonough, B.Stein, M.Stein (3) |
| 13 February 1988 | Arsenal | Away | 1–2 | 22,612 | M.Stein |
| 5 March 1988 | Wimbledon | Away | 0–2 | 04,854 | — |
| 15 March 1988 | Coventry City | Away | 0–4 | 13,711 | — |
| 29 March 1988 | Portsmouth | Home | 4–1 | 06,740 | B.Stein, M.Stein, Wilson, own goal |
| 2 April 1988 | Newcastle United | Away | 0–4 | 20,752 | — |
| 5 April 1988 | Sheffield Wednesday | Home | 2–2 | 07,337 | McDonough, B. Stein |
| 12 April 1988 | Manchester United | Away | 0–3 | 28,830 | — |
| 19 April 1988 | Queens Park Rangers | Home | 2–1 | 06,735 | Foster, Wilson (pen) |
| 30 April 1988 | Norwich City | Away | 2–2 | 13,171 | M. Stein, Wilson (pen) |
| 2 May 1988 | Watford | Home | 2–1 | 10,409 | Oldfield, Wilson (pen) |
| 4 May 1988 | Tottenham Hotspur | Away | 1–2 | 15,437 | Grimes |
| 7 May 1988 | Southampton | Away | 1–1 | 12,722 | Wilson |
| 9 May 1988 | Liverpool | Away | 1–1 | 30,374 | Oldfield |
| 13 May 1988 | Nottingham Forest | Home | 1–1 | 09,108 | Donaghy |
| 15 May 1988 | Nottingham Forest | Away | 1–1 | 13,106 | Oldfield |
Question:
how many games happened in 1987?
Answer:
21