Table:
seeded area
canola
all wheat
soybeans
barley
oats
corn for grain

thousand of acres

2018

march
21,383
25,259
6,452
6,059
3,148
3,758

june
22,740
24,710
6,320
6,499
3,053
3,634

% difference
6.3
-2.2
-2.0
7.3
-3.0
-3.3

2017

march
22,387
23,182
6,956
5,880
3,419
3,751

june
22,837
22,361
7,282
5,771
3,220
3,576

% difference
2.0
-3.5
4.7
-1.9
-5.8
-4.7

2016

march
19,345
23,846
5,306
6,777
2,972
3,477

june
20,020
23,177
5,465
6,385
2,861
3,330

% difference
3.5
-2.8
3.0
-5.8
-3.7
-4.2

2015

march
19,416
24,765
5,375
6,478
3,645
3,268

june
19,840
24,142
5,420
6,511
3,403
3,252

% difference
2.2
-2.5
0.8
0.5
-6.6
-0.5

2014

march
19,801
24,766
5,264
6,311
3,188
3,369

june
20,228
24,087
5,583
6,089
3,046
3,119

% difference
2.2
-2.7
6.1
-3.5
-4.4
-7.4

2013

march
19,133
26,618
4,294
7,240
3,379
3,813

june
19,738
25,906
4,589
7,175
3,371
3,645

% difference
3.2
-2.7
6.9
-0.9
-0.2
-4.4

2012

march
20,372
24,325
3,969
7,968
3,393
3,562

june
21,273
23,812
4,316
7,365
3,074
3,638

% difference
4.4
-2.1
8.7
-7.6
-9.4
2.2

2011

march
19,225
24,724
3,757
7,833
4,056
3,211

june
19,800
23,568
3,885
7,139
3,814
3,041

% difference
3.0
-4.7
3.4
-8.9
-6.0
-5.3

2010

march
16,907
23,221
3,532
8,344
3,992
3,016

june
17,895
22,720
3,724
8,052
3,738
2,981

% difference
5.8
-2.2
5.4
-3.5
-6.4
-1.2

2009

march
14,990
25,161
3,284
9,476
3,955
3,084

june
15,825
24,932
3,476
8,778
3,879
3,041

% difference
5.6
-0.9
5.8
-7.4
-1.9
-1.4

2008

march
14,805
25,109
2,985
9,332
4,485
3,005

june
15,812
25,100
2,993
9,072
4,382
2,975

% difference
6.8
0.0
0.3
-2.8
-2.3
-1.0

average % change by crop type
4.1
-2.4
3.9
-3.1
-4.5
-2.8

Statement: from 2008 to 2018, the average percentage difference at the national level in the preliminary acreage reports collected through the march farm survey ranged between +/-5.0% for canada's major field crops.
Question: what is the range of the average percentage difference at the national level in the preliminary acreage reports collected through the march farm survey for canada's major field crops from 2008 to 2017.
Answer: [-4.5, 4.1]