| Year |
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec |
| 1992 |
89 |
62 |
84 |
68 |
52 |
65 |
91 |
70 |
86 |
63 |
72 |
71 |
| 1993 |
59 |
64 |
73 |
63 |
52 |
78 |
78 |
80 |
90 |
63 |
50 |
43 |
| 1994 |
48 |
50 |
52 |
58 |
52 |
63 |
58 |
58 |
72 |
65 |
77 |
59 |
| 1995 |
70 |
41 |
55 |
46 |
58 |
58 |
57 |
65 |
59 |
68 |
63 |
44 |
| 1996 |
75 |
64 |
63 |
81 |
62 |
59 |
72 |
59 |
53
|
68 |
56 |
45 |
| 1997 |
55 |
51 |
54 |
59 |
49 |
73 |
63 |
58 |
66 |
44 |
44 |
43 |
| 1998 |
43 |
32 |
37 |
36 |
38 |
53 |
53 |
41 |
52 |
45 |
42 |
23 |
| 1999 |
29 |
15 |
25 |
21 |
19 |
42 |
30 |
37 |
25 |
28 |
21 |
25 |
| 2000 |
26 |
15 |
31 |
24 |
17 |
11 |
17 |
22 |
24 |
24 |
28 |
14 |
| 2001 |
25 |
27 |
25 |
32 |
26 |
13 |
11 |
17 |
15 |
6 |
8 |
9 |
| 2002 |
11 |
9 |
19 |
18 |
16 |
14 |
13 |
14 |
18 |
6 |
15 |
10 |
| 2003 |
13 |
9 |
12 |
19 |
8 |
13 |
10 |
9 |
10 |
17 |
9 |
6 |
| 2004 |
9 |
8 |
18 |
15 |
7 |
10 |
11 |
20 |
13 |
8 |
11 |
10 |
| 2005 |
11 |
7 |
12 |
6 |
5 |
8 |
11 |
10 |
7 |
7 |
4 |
5 |
| 2006 |
11 |
7 |
5 |
6 |
13 |
12 |
9 |
9 |
5 |
8 |
6 |
9 |
| 2007 |
7 |
5 |
10 |
3 |
8 |
6 |
3 |
9 |
9 |
6 |
5 |
3 |
| 2008 |
3 |
6 |
9 |
9 |
6 |
4 |
8 |
4 |
6 |
6 |
4 |
3 |
| 2009 |
6 |
7 |
11 |
12 |
3 |
8 |
9 |
12 |
8 |
13 |
8 |
13 |
| 2010** |
15 |
8 |
9 |
8 |
5 |
12 |
6 |
13 |
6 |
6 |
10 |
7 |
** Provisional data
Source: 1992 - 2010 Labbase 2