Just thought I would compile past years for Poland and the 2013 congregations number does indeed look like a typo.
If their branch was masking their figures and this year was "adjusted", then I can't see why they would only inflate congregation numbers and nothing else needed "adjusting".
Still, ignoring that anomaly, I found it interesting to note that their publisher numbers do seem to be basically where they were a decade ago. There were increases in some years, but they are sooner or later cancelled out so their growth looks basically flat, desipte their being 100 more congregations. As has been suspected, the population numbers certainly show an overall net migration in the past decade.
Also take a look at baptism numbers - they are nearly less than 40% of what they were in 1998. Memorial attendance is down 16% since 1998.
Poland
| Population | Peak pubs. | Ratio of 1 pub. to: | Av. pubs. | Inc. over prev. | Baptized | Av. Aux Pio. | Av. Pio. Pubs. | Congs. | Hours | Bible St. | Memorial Att. | |
| 1998 (yb98) | 38649914 | 124955 | 309 | 123704 | 1 | 6161 | (incl. in Pio.) | 7544 | 1714 | 16742761 | 50433 | 246485 |
| 1999 | 38661700 | 126635 | 305 | 123592 | 0 | 4516 | (incl. in Pio.) | 6601 | 1744 | 15723 | 42062 | 233060 |
| 2000 | (Lost my book!) | |||||||||||
| 2001 | 38654000 | 125287 | 309 | 122575 | 0 | 3741 | (incl. in Pio.) | 7488 | 1759 | 14595905 | 40439 | 235219 |
| 2002 | 38641000 | 124086 | 311 | 123034 | 0 | 3478 | (incl. in Pio.) | 7313 | 1769 | 14438033 | 40846 | 235775 |
| 2003 | 38644000 | 126538 | 305 | 124294 | 1 | 3802 | (incl. in Pio.) | 7469 | 1774 | 14429483 | 43548 | 232766 |
| 2004 | 38632453 | 127868 | 302 | 126573 | 2 | 3709 | (incl. in Pio.) | 7909 | 1781 | 14759563 | 47361 | 234403 |
| 2005 | 38632453 | 128616 | 300 | 127377 | 1 | 4261 | (incl. in Pio.) | 8539 | 1794 | 15329734 | 48545 | 237134 |
| 2006 | 38175000 | 128519 | 297 | 127729 | 0 | 3681 | 3385 | (8,603) 5218 | 1799 | 15214120 | 45850 | 224400 |
| 2007 | 38157055 | 127481 | 299 | 126827 | -1 | 3728 | 3575 | (8994) 5419 | 1800 | 15097435 | 45687 | 221004 |
| 2008 | 38125479 | 128235 | 297 | 126967 | 0 | 3811 | 4666 | (10488) 5822 | 1803 | 16458050 | 44679 | 218539 |
| 2009 | 38115641 | 127154 | 300 | 125681 | -1 | 3242 | 4356 | (10530) 6274 | 1812 | 16136421 | 45822 | 213105 |
| 2010 | (Lost my book!) | |||||||||||
| 2011 | 38091951 | 126488 | 301 | 125193 | 2669 | 3820 | (10965) 7145 | 1814 | 16569723 | 47322 | 212002 | |
| 2012 | 38207000 | 126196 | 303 | 124832 | 2275 | 6674 | (13867) 7193 | 1814 | 17679223 | 49542 | 213284 | |
| 2013 (yb13) | 38081740 | 125485 | 303 | 124292 | 2420 | 5952 | (13460) 7508 | 1487 | 18001901 | 50800 | 206964 | |