Table 2.

The distribution of patient's age and onset year.

Age	2002	2003	2004	2005	2006	2007	2008	2009	2010	2011	2012	2013	2014	2015	2016	2017	Total
A <1	1	0	0	0	0	0	0	0	1	0	1	0	0	0	0	0	3
1 ≤ A ≤2	2	0	0	1	0	3	2	1	1	0	0	0	1	0	1	0	12
2 ≤ A ≤3	1	1	2	1	2	2	3	2	0	2	0	2	1	0	1	1	21
3 ≤ A ≤ 4	5	3	1	1	2	2	3	6	4	2	1	2	0	1	1	0	34
4 ≤ A ≤ 5	2	4	0	1	4	1	5	4	4	2	4	1	2	0	2	0	36
5 ≤ A ≤ 6	2	0	1	0	3	4	4	2	2	1	2	0	1	1	1	0	24
6 ≤ A ≤7	0	1	0	1	1	6	3	2	1	0	3	1	2	3	1	1	26
7 ≤ A ≤ 8	2	3	2	3	1	0	1	1	1	0	3	0	0	1	1	2	21
8 ≤ A ≤ 9	2	0	2	1	1	4	1	3	2	0	0	1	0	2	0	1	20
9 ≤ A ≤ 10	3	3	0	0	1	2	0	1	0	0	0	0	0	1	0	0	11
10 ≤ A ≤ 11	1	1	1	1	0	0	0	0	1	3	0	1	0	1	0	1	11
11 ≤ A ≤ 12	0	1	0	1	0	1	0	1	1	0	0	0	0	0	0	1	6
12 ≤ A ≤ 13	0	1	0	0	0	0	0	1	0	0	0	0	0	0	0	0	2
13 ≤ A ≤ 14	1	0	0	0	0	0	0	2	0	0	1	0	1	0	0	0	5
Total	22	18	9	11	15	25	22	26	18	10	15	8	8	10	8	7	232