| Maternal age groups | ||||||
---|---|---|---|---|---|---|---|
Year |  < 20 years | 20–24 years | 25–29 years | 30–34 years | 35–39 years | 40–44 years |  > 44 years |
Number of births | |||||||
  2013 | 12,964 | 91,251 | 282,778 | 365,381 | 229,728 | 46,544 | 1,116 |
  2014 | 13,010 | 86,589 | 267,833 | 359,293 | 225,873 | 49,603 | 1,272 |
  2015 | 11,930 | 84,465 | 262,259 | 364,868 | 228,282 | 52,554 | 1,308 |
  2016 | 11,099 | 82,194 | 250,709 | 354,984 | 223,310 | 53,478 | 1,401 |
  2017 | 9,900 | 79,272 | 240,949 | 345,414 | 216,947 | 52,101 | 1,512 |
Low birth weight rate* | |||||||
  2013 | 102.6 | 90.0 | 88.3 | 92.5 | 105.4 | 125.9 | 214.2 |
  2014 | 100.8 | 89.0 | 87.5 | 92.5 | 105.1 | 122.9 | 203.6 |
  2015 | 99.9 | 89.8 | 86.7 | 91.3 | 103.7 | 123.0 | 176.6 |
  2016 | 100.6 | 88.0 | 86.4 | 92.0 | 101.6 | 121.6 | 187.7 |
  2017 | 106.5 | 89.9 | 88.0 | 90.8 | 101.6 | 121.5 | 167.3 |