Table:
Public opinion polls for becoming a republic or staying as a monarchy

Date
Firm
Republic
Monarchy
Undecided

November 2018
Newspoll[48]

40%
48%
12%

May 2018
Essential[49]

48%
30%
22%

April 2018
Newspoll[50]

50%
41%
9%

January 2018
ResearchNow[51]

52%
22%
25%

January 2018
Essential[52]

44%
29%
26%

August 2017
Newspoll[53]

51%
38%
11%

January 2017
Essential[52]

44%
30%
26%

December 2016
ANU[54]

52.5%
47.5%
–

January 2016
Newspoll[55]

51%
37%
12%

April 2014
Fairfax-Nielsen[56]

42%
51%
7%

February 2014
ReachTEL[57]

39.4%
41.6%
19%

June 2012
Roy Morgan[58]

35%
58%
7%

May 2011
Roy Morgan[59]

34%
55%
11%

2011
Newspoll[55]

41%
39%
20%

August 2010
Fairfax-Nielsen[60]

44%
48%
8%

October 2009
UMR[61]

59%
33%
8%

November 2008
UMR[62]

50%
28%
22%

May 2008
Morgan[63]

45%
42%
13%

2007
Newspoll[55]

45%
36%
19%

2006
Newspoll[55]

46%
34%
20%

2005
Newspoll[55]

46%
35%
19%

2003
Newspoll[55]

51%
32%
17%

2002
Newspoll[55]

51%
35%
14%

2001
Newspoll[55]

52%
35%
13%

2000
Newspoll[55]

52%
35%
13%

1999
Newspoll[55]

51%
35%
14%

January 1999
Newspoll[55]

46%
34%
20%

Based on the table image, your task is to extract the cells' values in row 21. Show the cells in a row in the JSON format {"row_id":"<row index>", "cell_list":"<a list of cells in this row>"}. For example, {"row_id":"1", "cell_list": ["A", "B", "C"]}.

The target cell values of row 21: {"row_id": "21", "cell_list": ['2006', 'Newspoll', '46%', '34%', '20%']}