統計範圍：2006/12/27~2009/09/30 為 m 文。
          2009/10/01~2014/10/31 所有沒被主動刪除的文章。
          共計 380139 篇文章。

計入屬性框類型：\[\d\d(冬|春|夏|秋)\]
例如：[12冬][12春][12夏][12秋]
另外必須為在標題的最前端，包含 Re: 及 Fw: 。

1978               [78春]    3
1979               [79春]   52
1980               [80春]   39
1981                                           [81秋]   65
1982               [82春]    1
1983               [83春]    1
1984
1985 [85冬]   13   [85春]    2
1986               [86春]  101
1987               [87春]   52
1988               [88春]    3
1989               [89春]   41                 [89秋]   54
1990
1991 [91冬]   54   [91春]    1
1992 [92冬]   49   [92春]    9                 [92秋]    3
1993               [93春]    1
1994 [94冬]   50   [94春]   52                 [94秋]    7
1995 [95冬]   48   [95春]   39                 [95秋]    2
1996 [96冬]   50   [96春]  103
1997 [97冬]   70   [97春]   19
1998               [98春]    2
1999 [99冬]    1
2000
2001               [01春]    1
2002                             [02夏]    1   [02秋]    6
2003               [03春]    2   [03夏]    1   [03秋]    3
2004                             [04夏]   15   [04秋]    5
2005 [05冬]    1   [05春]    1
2006               [06春]   12                 [06秋]    1
2007               [07春]   16                 [07秋]    6
2008 [08冬]   16   [08春]    4   [08夏]    1   [08秋]    4
2009               [09春]    6   [09夏]   28   [09秋]   63
2010 [10冬]  103   [10春] 1256   [10夏] 1625   [10秋] 1982
2011 [11冬] 2513   [11春] 2653   [11夏] 1609   [11秋] 2694
2012 [12冬] 1853   [12春] 2103   [12夏] 2528   [12秋] 2407
2013 [13冬] 1729   [13春] 2967   [13夏] 1961   [13秋] 2861
2014 [14冬] 1736   [14春] 2510   [14夏] 2369   [14秋]  991
2015 [15冬]    1