| 2009 | 2010 | 2011 | 2012 | 2013 | 2014 | |
X City | Number of full-time teachers | 11,812 | 14,269 | 18,768 | 23,006 | 26,854 | 27,917 |
Number of children in kindergarten | 162,993 | 183,621 | 240,278 | 270,810 | 285,579 | 289,487 | |
Teacher-child ratio | 1:13.8 | 1:12.9 | 1:12.8 | 1:11.8 | 1:10.6 | 1:10.4 | |
Y City | Number of full-time teachers | 2864 | 3645 | 4335 | 4998 | 5663 | 6512 |
Number of children in kindergarten | 55,180 | 63,644 | 85,160 | 101,147 | 114,322 | 123,528 | |
Teacher-child ratio | 1:19.3 | 1:17.5 | 1:19.6 | 1:20.2 | 1:20.2 | 1:19.0 | |
W City | Number of full-time teachers | 3892 | 4204 | 6360 | 7078 | 8024 | 9021 |
Number of children in kindergarten | 117,114 | 130,192 | 147,504 | 161,564 | 174,821 | 181,284 | |
Teacher-child ratio | 1:30.1 | 1:31.0 | 1:23.2 | 1:22.8 | 1:21.8 | 1:20.1 |