> Maintenance - Some figures
A rough outline of the investments
The Standardisation Working Group (SWG) meets on a monthly basis. Such meetings are on average attended by 10 persons and a session takes 4 hours. (12 x 10 x 4 = 480 hours yearly)
The Joint Montoring Committee (JMC) meets 4 times a year. These are attended by 9 persons and a session takes 2 hours. (4 x 9 x 2 = 72 hours yearly)
Our meeting archives go back up to the beginning of the year 2002.
On 08-12-23 we are in year 2023 which amounts for 21 years and 342 days since that start in 2002.
These 21 years and 342 days amount for 11592 + 516 = 12108 hours.

This is a minimalistic figure which does not account for the pre- and post-meeting work of all these persons, nor for the addtionnal and more specific (sub-)working groups, nor for the coordination work.
The Telebib centre is staffed with one person. (220 x 8 = 1760 hours yearly)

Some overall figures
Please do note that multiple MCI-versions are in status 2 "approved" at any given moment in time.
Please do note that some MCI's define messages where other MCI's define sub-parts of messages.
By "Overall Distinct Data Elements" are ment the distinct elements, knowing a same element will appear in multiple MCI's. Here we do count such element only once.
By "Overall Distinct Coded Data Elements" are ment those (again distinct) elements which use a code-list.
 
Status Messages MCIs in MCI Versions contained Total Data Elements contained Overall Distinct Data Elements contained Overall Distinct Coded Data Elements
2  57  128  601  54700  3379  478 

Some figures per Release
Please do note that not all releases impact all MCI's.
By "Overall Distinct Data Elements" are ment the distinct elements, knowing a same element will appear in multiple MCI's. Here we do count such element only once.
By "Overall Distinct Coded Data Elements" are ment those (again distinct) elements which use a code-list.
 
Release impacted MCIs contained Total Data Elements contained Overall Distinct Data Elements contained Overall Distinct Coded Data Elements
202501  25  3669  1695  234 
202401  56  6432  2266  324 
202301  50  5790  2112  304 
202201  61  6403  2478  409 
202101  60  5108  2218  307 
202001  67  6115  2096  325 
201905  4  82  44  1 
201901  72  6473  2148  307 
201806  22  1974  472  105 
201801  45  4196  1418  229 
201701  59  5125  1808  295 
201601  41  3641  1109  218 
201510  3  217  167  25 
201503  3  244  142  25 
201502  2  115  109  24 
201501  66  4255  1654  247 
201405  1  75  75  19 
20140201  1  114  113  33 
201401  41  2393  1050  166 
201301  33  3668  1007  224 
201201  40  4014  1231  204 
201101  37  3555  1099  197 
2010pre  1  50  50  6 
20101001  1  54  54  6 
20100501  1  17  17  2 
201001  26  1302  330  71 
200901  24  2606  502  116 
200801  21  1145  349  83 
200701  29  1421  747  127 
200601  42  1407  612  123 
2005pre  7  250  209  45