Half year of birthday | 2010 | 2010 | 2011 | 2011 | 2012 | 2012 | 2013 | 2013 | 2014 |
---|---|---|---|---|---|---|---|---|---|
s1 | s2 | s1 | s2 | s1 | s2 | s1 | s2 | s1 | |
n | 877 | 914 | 1316 | 1340 | 1431 | 1430 | 1323 | 1408 | 1404 |
1 dose at 15 | 23.7 [20.9–26.5] | 24.7 [21.9–27.5] | 26.5 [24.1–28.9] | 25.6 [23.3–27.9] | 19.8 [17.1–21.9] | 17.5 [15.5–19.5] | 16.3 [14.3–18.3] | 17.5 [15.5–19.5] | 17.7 [15.7–19.7] |
3 doses at 16 | – | – | 26.5 [23.6–29.4] | 27.4 [24.5–30.3] | 28.2 [25.8–30.6] | 24.2 [21.9–26.5] | 22.0 [19.9–24.1] | 20.1 [18.0–22.2] | 18.6 [16.5–20.7] |
3 doses at 17 | – | – | – | – | 31.2 [28.8–33.6] | 30.3 [27.9–32.7] | 32.0 [29.5–34.5] | 27.2 [24.9–29.5] | 26.3 [24.0–28.6] |