44
55
41
64
22
43
21
53
32
33
52
13
44
32
2001
2001
2002
2002
2003
2003
2004
2004
2005
2005
2006
2006
2007
2007
80
80
60
60
40
40
20
20
0
0
series-1
series-2
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