From: Modeling delay to diagnosis for Amyotrophic lateral sclerosis: under reporting and incidence estimates
Year of diagnosis
Number of cases
Percentage
1997
12
0.67%
1998
11
0.61%
1999
2000
34
1.89%
2001
31
1.72%
2002
37
2.06%
2003
71
3.95%
2004
85
4.72%
2005
122
6.78%
2006
223
12.40%
2007
393
21.85%
2008
428
23.79%
2009
329
18.29%