Table 1.

 Number of cases and surgical treatment of invasive breast cancer and ductal carcinoma in situ in Norwegian women aged 40-79, 1993 to 2008

Year	Invasive breast cancer	Ductal carcinoma in situ	Treatment for invasive breast cancer			Treatment for ductal carcinoma in situ			Missing information		Population of women aged 40-79
			Mastectomy	Breast conserving therapy		Mastectomy	Breast conserving therapy		Invasive breast cancer	Ductal carcinoma in situ
1993	1521	76	1228	171		53	23		122	0	882 064
1994	1581	86	1307	174		66	20		100	0	889 565
1995	1646	87	1322	197		55	32		127	0	897 142
1996	1891	161	1498	280		100	61		113	0	904 611
1997	1956	203	1525	328		118	82		103	3	912 580
1998	1943	197	1331	488		114	83		124	0	919 467
1999	1945	161	1318	511		90	70		116	1	927 020
2000	2037	205	1278	650		112	91		109	2	936 320
2001	2151	209	1286	782		106	101		83	2	941 338
2002	2186	243	1167	937		116	124		82	3	947 989
2003	2231	237	945	1198		82	150		88	5	955 825
2004	2241	282	899	1244		86	195		98	1	964 939
2005	2241	271	847	1284		80	188		110	3	976 041
2006	2173	249	875	1200		76	166		98	7	988 656
2007	2196	273	933	1155		83	176		108	14	1 002 024
2008	2261	268	906	1147		104	150		208	14	1 017 298