Table:
ethnic group
census 1948
census 1953
census 1961
census 1971
census 1981
census 1991
census 2002
census 2011

number
%
number
%
number
%
number
%
number
%
number
%
number
%
number
%

serbs
827,633
50.4
865,538
50.9
1,017,713
54.9
1,089,132
55.8
1,107,375
54.4
1,143,723
56.8
1,321,807
65.05
1,289,635
66.76

hungarians
428,554
26.1
435,179
25.6
442,560
23.9
423,866
21.7
385,356
18.9
339,491
16.9
290,207
14.28
251,136
13

slovaks
69,622
4.2
71,153
4.2
73,830
4.0
72,795
3.7
69,549
3.4
63,545
3.1
56,637
2.79
50,321
2.6

croats
132,980
8.1
127,027
7.5
145,341
7.8
138,561
7.1
109,203
5.4
74,808
3.7
56,546
2.78
47,033
2.43

yugoslavs
/
/
/
/
3,174
0.1
46,928
2.4
167,215
8.2
174,295
8.7
49,881
2.45
12,176
0.63

montenegrins
30,531
1.9
30,516
1.8
34,782
1.9
36,416
1.9
43,304
2.1
44,838
2.2
35,513
1.75
22,141
1.15

romanians
57,899
3.5
57,218
3.4
57,259
3.1
52,987
2.7
47,289
2.3
38,809
1.9
30,419
1.50
25,410
1.32

roma
/
/
/
/
/
/
/
/
/
/
/
/
29,057
1.43
42,391
2.19

total
1,640,757
1,699,545
1,854,965
1,952,533
2,034,772
2,013,889
2,031,992
1,916,889

note: 2011 census results about ethnicity will be published during 2012

Statement: there are 42,391 roma in vojvodina or 2.19% of the population till 2011.
Question: what was the population of roma till 2011?
Answer: [42391.0]