SN4 ""

No	Pattern	Freq
1	[noun] [prep] recent years	996
2	[noun sg] [prep] recent years	572
3	[verb] [prep] recent years	435
4	[noun pl] [prep] recent years	355
5	[vb pp] [prep] recent years	342
6	[adv] [prep] recent years	205
7	[adv] [prep] recent years	175
8	[conj] [prep] recent years	141
9	[adj] [prep] recent years	103
10	[coord] [prep] recent years	87
11	[adj] [prep] recent years	82
12	[noun prp] [prep] recent years	61
13	but [prep] recent years	51
14	but [prep] recent years	51
15	have [prep] recent years	46
16	and [prep] recent years	36
17	and [prep] recent years	36
18	[pron] [prep] recent years	36
19	[subord] [prep] recent years	31
20	[vb -s] [prep] recent years	27
21	[v-ing] [prep] recent years	27
22	[adv prt] [prep] recent years	25
23	that [prep] recent years	23
24	[that] [prep] recent years	23
25	that [prep] recent years	23
26	has [prep] recent years	22
27	decline [prep] recent years	20
28	increase [prep] recent years	20
29	only [prep] recent years	19
30	only [prep] recent years	19