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:
| President | Schl. 1948 | Schl. 1962 | M-B 1982 | CT 1982 | Siena 1982 | Siena 1990 | Siena 1994 | R-McI 1996 | Schl. 1996 | C-SPAN 1999 | WSJ 2000 | Siena 2002 | WSJ 2005 | Times 2008** | C-SPAN 2009 | Siena 2010 | USPC 2011 | Aggr. |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| George Washington | 02 | 02 | 03 | 03 | 04 | 04 | 04 | 03 | 02 | 03 | 01 | 04 | 01 | 02 | 02 | 04 | 03 | 03 |
| John Adams | 09 | 10 | 09 | 14 (tie) | 10 | 14 | 12 | 14 | 11 | 16 | 13 | 12 | 13 | 13 | 17 | 17 | 12 | 12 |
| Thomas Jefferson | 05 | 05 | 04 | 05 | 02 | 03 | 05 | 04 | 04 | 07 | 04 | 05 | 04 | 04 | 07 | 05 | 04 | 04 |
| James Madison | 14 | 12 | 14 | 17 | 09 | 08 | 09 | 10 | 17 | 18 | 15 | 09 | 17 | 15 | 20 | 06 | 14 | 13 |
| James Monroe | 12 | 18 | 15 | 16 | 15 | 11 | 15 | 13 | 15 | 14 | 16 | 08 | 16 | 21 | 14 | 07 | 13 | 14 (tie) |
| John Quincy Adams | 11 | 13 | 16 | 19 | 17 | 16 | 17 | 18 | 18 | 19 | 20 | 17 | 25 | 16 | 19 | 19 | 20 | 18 |
| Andrew Jackson | 06 | 06 | 07 | 06 | 13 | 09 | 11 | 08 | 05 | 13 | 06 | 13 | 10 | 14 | 13 | 14 | 09 | 08 (tie) |
| Martin Van Buren | 15 | 17 | 20 | 18 | 21 | 21 | 22 | 21 | 21 | 30 | 23 | 24 | 27 | 40 | 31 | 23 | 27 | 24 |
| WilliamHenryHarrison | – | – | – | 38 | 26 | 35 | 28 | 35 | – | 37 | – | 36 | – | 39 | 39 | 35 | – | 38 (tie) |
| John Tyler | 22 | 25 | 28 | 29 | 34 | 33 | 34 | 34 | 32 | 36 | 34 | 37 | 35 | 31 | 35 | 37 | 37 | 36 |
| James K. Polk | 10 | 08 | 12 | 11 | 12 | 13 | 14 | 11 | 09 | 12 | 10 | 11 | 09 | 09 | 12 | 12 | 16 | 10 |
| Zachary Taylor | 25 | 24 | 27 | 28 | 29 | 34 | 33 | 29 | 29 | 28 | 31 | 34 | 33 | 28 | 29 | 33 | 33 | 35 |
| Millard Fillmore | 24 | 26 | 29 | 31 | 32 | 32 | 35 | 36 | 31 | 35 | 35 | 38 | 36 | 33 | 37 | 38 | 35 | 38 (tie) |
| Franklin Pierce | 27 | 28 | 31 | 35 | 35 | 36 | 37 | 37 | 33 | 39 | 37 | 39 | 38 | 41 | 40 | 40 | 39 | 40 |
| James Buchanan | 26 | 29 | 33 | 36 | 37 | 38 | 39 | 40 | 38 | 41 | 39 | 41 | 40 | 42 | 42 | 42 | 40 | 42 |
| Abraham Lincoln | 01 | 01 | 01 | 01 | 03 | 02 | 02 | 01 | 01 | 01 | 02 | 02 | 02 | 01 | 01 | 03 | 02 | 01 |
| Andrew Johnson | 19 | 23 | 32 | 32 | 38 | 39 | 40 | 39 | 37 | 40 | 36 | 42 | 37 | 24 | 41 | 43 | 36 | 41 |
| Ulysses S. Grant | 28 | 30 | 35 | 30 | 36 | 37 | 38 | 38 | 34 | 33 | 32 | 35 | 29 | 18 | 23 | 26 | 29 | 37 |
| Rutherford B. Hayes | 13 | 14 | 22 | 22 | 22 | 23 | 24 | 25 | 23 | 26 | 22 | 27 | 24 | 27 | 33 | 31 | 30 | 25 |
| James A. Garfield | – | – | – | 33 | 25 | 30 | 26 | 30 | – | 29 | – | 33 | – | 34 | 28 | 27 | – | 29 (tie) |
| Chester A. Arthur | 17 | 21 | 26 | 24 | 24 | 26 | 27 | 28 | 26 | 32 | 26 | 30 | 26 | 22 | 32 | 25 | 32 | 28 |
| Grover Cleveland | 08 | 11 | 17 | 13 | 18 | 17 | 19 | 16 | 13 | 17 | 12 | 20 | 12 | 19 | 21 | 20 | 21 | 19 |
| Benjamin Harrison | 21 | 20 | 23 | 25 | 31 | 29 | 30 | 31 | 19 | 31 | 27 | 32 | 30 | 30 | 30 | 34 | 34 | 33 |
| William McKinley | 18 | 15 | 18 | 10 | 19 | 19 | 18 | 17 | 16 | 15 | 14 | 19 | 14 | 17 | 16 | 21 | 17 | 20 (tie) |
| Theodore Roosevelt | 07 | 07 | 05 | 04 | 05 | 05 | 03 | 05 | 06 | 04 | 05 | 03 | 05 | 05 | 04 | 02 | 05 | 05 |
| William Howard Taft | 16 | 16 | 19 | 20 | 20 | 20 | 21 | 20 | 22 | 24 | 19 | 21 | 20 | 29 | 24 | 24 | 25 | 22 (tie) |
| Woodrow Wilson | 04 | 04 | 06 | 07 | 06 | 06 | 06 | 06 | 07 | 06 | 11 | 06 | 11 | 10 | 09 | 08 | 06 | 06 |
| Warren G. Harding | 29 | 31 | 36 | 37 | 39 | 40 | 41 | 41 | 39 | 38 | 37 | 40 | 39 | 35 | 38 | 41 | 38 | 43 |
| Calvin Coolidge | 23 | 27 | 30 | 27 | 30 | 31 | 36 | 33 | 30 | 27 | 25 | 29 | 23 | 26 | 26 | 29 | 28 | 31 |
| Herbert Hoover | 20 | 19 | 21 | 21 | 27 | 28 | 29 | 24 | 35 | 34 | 29 | 31 | 31 | 36 | 34 | 36 | 26 | 29 (tie) |
| Franklin D. Roosevelt | 03 | 03 | 02 | 02 | 01 | 01 | 01 | 02 | 03 | 02 | 03 | 01 | 03 | 03 | 03 | 01 | 01 | 02 |
| Harry S. Truman | – | 09 | 08 | 08 | 07 | 07 | 07 | 07 | 08 | 05 | 07 | 07 | 07 | 07 | 05 | 09 | 07 | 07 |
| Dwight D. Eisenhower | – | 22 | 11 | 09 | 11 | 12 | 08 | 09 | 10 | 09 | 09 | 10 | 08 | 06 | 08 | 10 | 10 | 08 (tie) |
| John F. Kennedy | – | – | 13 | 14 (tie) | 08 | 10 | 10 | 15 | 12 | 08 | 18 | 14 | 15 | 11 | 06 | 11 | 15 | 11 |
| Lyndon B. Johnson | – | – | 10 | 12 | 14 | 15 | 13 | 12 | 14 | 10 | 17 | 15 | 18 | 12 | 11 | 16 | 11 | 14 (tie) |
| Richard Nixon | – | – | 34 | 34 | 28 | 25 | 23 | 32 | 36 | 25 | 33 | 26 | 32 | 38 | 27 | 30 | 23 | 32 |
| Gerald Ford | – | – | 24 | 23 | 23 | 27 | 32 | 27 | 28 | 23 | 28 | 28 | 28 | 25 | 22 | 28 | 24 | 26 |
| Jimmy Carter | – | – | 25 | 26 | 33 | 24 | 25 | 19 | 27 | 22 | 30 | 25 | 34 | 32 | 25 | 32 | 18 | 27 |
| Ronald Reagan | – | – | – | – | 16 * | 22 | 20 | 26 | 25 | 11 | 08 | 16 | 06 | 08 | 10 | 18 | 08 | 17 |
| George H. W. Bush | – | – | – | – | – | 18 * | 31 | 22 | 24 | 20 | 21 | 22 | 21 | 20 | 18 | 22 | 22 | 22 (tie) |
| Bill Clinton | – | – | – | – | – | – | 16 * | 23 * | 20 * | 21 * | 24 * | 18 | 22 | 23 | 15 | 13 | 19 | 20 (tie) |
| George W. Bush | – | – | – | – | – | – | – | – | – | – | – | 23 * | 19 * | 37 * | 36 | 39 | 31 | 34 |
| Barack Obama | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 15 * | – | 14 (tie) * |
| Total in survey | 29 | 31 | 36 | 38 | 39 | 40 | 41 | 41 | 39 | 41 | 39 | 42 | 40 | 42 | 42 | 43 | 40 | 43 |
Question:
Who is the president when c-span 2009 is 21?
Answer:
Grover Cleveland