year	0 days	0-7 days	7-35 days	more than 35 days
2001	4.0	21.7	47.5	26.8
2002	3.5	22.7	46.2	27.6
2003	2.1	13.1	40.9	43.8
2004	4.4	27.3	43.0	25.3
2005	5.4	24.5	34.1	36.0
2006	2.2	16.8	39.8	41.2
2007	0.5	10.7	60.0	28.8
2008	1.2	23.2	55.7	19.9
2009	1.4	22.4	54.0	22.3
2010	3.4	18.7	54.4	23.5
2011	2.4	13.3	51.6	32.7