Table:
0
A
B
C
D
E
F
G
1
Year
Domestic freight
Domestic mail
International freight
International mail
Total freight and mail
Change
2
2005
4692
5251
115734
9627
135303
+1.9%
3
2006
4145
5469
126332
9098
145044
+7.2%
4
2007
3171
5676
139840
14961
154801
+6.7%
5
2008
2968
4435
140572
9532
157508
+1.8%
6
2009
1322
2161
110382
8243
122107
−22.5%
7
2010
1083
1992
147139
7793
158007
+29.4%
8
2011
615
2464
157178
9962
169985
+8.0%

Questions and formulas:
Question: what's the year with change being +8.0%
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:G1,G1="+8.0%"),1))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:G8,G2:G8="+8.0%"),1))
Level: medium
Question: what's the domestic freight with change being +8.0%
Formula: SUMIFS(B1,G1,"+8.0%")
Formula2: SUMIFS(B2:B8,G2:G8,"+8.0%")
Level: easy
Question: what is the maximum international mail with total freight and mail being 145044
Formula: MAX(FILTER(E1, F1=145044))
Formula2: MAX(FILTER(E2:E8, F2:F8=145044))
Level: easy