| 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 |
篇数 | 6 | 9 | 8 | 6 | 7 | 11 | 12 | 12 | 13 | 14 |
% | 4.2 | 6.3 | 5.6 | 4.2 | 4.9 | 7.7 | 8.5 | 8.5 | 9.2 | 9.9 |