15
14
13
12
11
10
09
08
07
0
10
20
30
40
50
Thousands, quarterly
2015
14
13
12
11
10
09
08
2007
0
10
20
30
40
50
Thousands, quarterly
2015
14
13
12
11
10
09
08
2007
0
10
20
30
40
50
Thousands, quarterly
2015
14
13
12
11
10
09
08
2007
0
10
20
30
40
50
Thousands, quarterly