Table 1.
Year | Cases | Adolescent population | Incidence rate | 95% CI |
---|---|---|---|---|
1980 | 1 | 974,139 | 0.103 | 0–0.588 |
1981 | 2 | 971,855 | 0.206 | 0.019–0.757 |
1982 | 1 | 971,766 | 0.103 | 0–0.590 |
1983 | 1 | 964,869 | 0.104 | 0–0.594 |
1984 | 3 | 976,392 | 0.307 | 0.058–0.910 |
1985 | 1 | 980,476 | 0.102 | 0–0.585 |
1986 | 2 | 985,738 | 0.203 | 0.019–0.746 |
1987 | 1 | 991,768 | 0.101 | 0–0.578 |
1988 | 1 | 998,394 | 0.100 | 0–0.574 |
1989 | 0 | 1,000,088 | − | – |
1990 | 2 | 996,710 | 0.201 | 0.019–0.738 |
1991 | 0 | 992,166 | – | – |
1992 | 2 | 988,829 | 0.202 | 0.019–0.744 |
1993 | 1 | 981,331 | 0.102 | 0–0.584 |
1994 | 0 | 968,239 | – | – |
1995 | 2 | 950,369 | 0.210 | 0.020–0.774 |
1996 | 1 | 934,323 | 0.107 | 0–0.614 |
1997 | 0 | 918,173 | – | – |
1998 | 2 | 902,396 | 0.222 | 0.021–0.815 |
1999 | 3 | 886,749 | 0.338 | 0.064–1.001 |
2000 | 0 | 871,340 | – | – |
2001 | 2 | 851,715 | 0.235 | 0.022–0.864 |
2002 | 2 | 821,813 | 0.243 | 0.023–0.900 |
2003 | 1 | 790,512 | 0.127 | 0–0.725 |
2004 | 0 | 759,025 | – | – |
2005 | 0 | 726,333 | – | – |
2006 | 1 | 691,793 | 0.145 | 0–0.829 |
2007 | 2 | 667,579 | 0.300 | 0.028–1.102 |
2008 | 6 | 645,452 | 0.930 | 0.335–2.037 |
2009 | 1 | 624,787 | 0.160 | 0–0.917 |
2010 | 5 | 602,618 | 0.830 | 0.262–1.952 |
2011 | 3 | 574,943 | 0.522 | 0.098–1.545 |
2012 | 4 | 556,263 | 0.719 | 0.187–1.859 |
2013 | 3 | 543,756 | 0.626 | 0.123–2.192 |
2014 | 1 | 53,924 | 0.128 | 0.001–0.732 |