SN4 ""

No	Pattern	Freq
1	last two years	342
2	last ten years	295
3	last three years	240
4	last five years	240
5	last twenty years	158
6	last 20 years	119
7	last four years	114
8	last 10 years	96
9	last 30 years	76
10	last thirty years	71
11	last six years	53
12	last fifteen years	50
13	last hundred years	49
14	last forty years	45
15	last 15 years	42
16	last fifty years	37
17	last 25 years	36
18	last 50 years	36
19	last 40 years	35
20	last seven years	33
21	last eight years	29
22	last 13 years	27
23	last twelve years	22
24	last 12 years	21
25	last 100 years	20
26	last fourteen years	20
27	last twenty-five years	18
28	last nine years	18
29	last 150 years	18
30	last 200 years	11