时间：2015-04-13 16:01作者：CFA
|
级别 |
Level 1 |
Level 2 |
Level 3 |
|
|
年份 |
6月 |
12月 |
6月 |
6月 |
|
2000 |
52% |
不考 |
54% |
65% |
|
2001 |
49% |
不考 |
46% |
82% |
|
2002 |
42% |
不考 |
47% |
58% |
|
2003 |
42% |
40% |
47% |
68% |
|
2004 |
34% |
36% |
32% |
64% |
|
2005 |
36% |
34% |
56% |
55% |
|
2006 |
40% |
39% |
48% |
76% |
|
2007 |
40% |
39% |
40% |
50% |
|
2008 |
35% |
35% |
46% |
53% |
|
2009 |
46% |
34% |
41% |
49% |
|
2010 |
42% |
36% |
39% |
46% |
|
2011 |
39% |
38% |
43% |
51% |
|
2012 |
38% |
37% |
42% |
52% |
|
2013 |
37% |
43% |
43% |
49% |
|
2014 |
42% |
44% |
46% |
54% |
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