| – | = | non occurrence |
| .. | = | not available |
| … | = | confidential data |
| 0 | = | less than half of unit |
| __ | = | break in series (limited comparability) |
| x | = | not applicable |
| blue number | = | annual preliminary data |
| green number | = | revised data |
Index numbers have been calculated on basis of preliminary data without roundings.
Due to roundings the sum of detailed data may differ from the total.
Recent monthly and quarterly data are preliminary, they may be corrected in course of the year. They are not indicated by different colour.
Status data refer to the end of the period, if it is not otherwise stated.
| Month | 2003 | 2004 | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 | 2012 | 2013 |
|---|---|---|---|---|---|---|---|---|---|---|---|
J = January |
22 | 21 | 21 | 22 | 22 | 22 | 20 | 20 | 21 | 22 | 22 |
F = February |
20 | 20 | 20 | 20 | 20 | 21 | 20 | 20 | 20 | 21 | 20 |
M = March |
21 | 22 | 21 | 22 | 21 | 19 | 23 | 22 | 22 | 21 | 20 |
A = April |
21 | 21 | 21 | 19 | 20 | 23 | 21 | 21 | 20 | 20 | 21 |
My = May |
21 | 20 | 21 | 22 | 21 | 19 | 20 | 20 | 22 | 21 | 21 |
Ju = June |
20 | 22 | 22 | 21 | 21 | 21 | 21 | 22 | 21 | 21 | 20 |
Jl = July |
23 | 22 | 21 | 21 | 22 | 23 | 23 | 22 | 21 | 22 | 23 |
Au = August |
20 | 21 | 23 | 23 | 22 | 20 | 20 | 21 | 23 | 22 | 21 |
S = September |
22 | 22 | 22 | 21 | 20 | 22 | 22 | 22 | 22 | 20 | 21 |
O = October |
22 | 21 | 21 | 21 | 23 | 22 | 21 | 21 | 21 | 22 | 22 |
N = November |
20 | 21 | 21 | 20 | 20 | 20 | 21 | 21 | 21 | 21 | 20 |
D = December |
21 | 23 | 21 | 19 | 19 | 21 | 23 | 23 | 21 | 18 | 20 |
| Total | 253 | 256 | 255 | 252 | 251 | 253 | 255 | 255 | 255 | 251 | 251 |