*Excludes Observations that spanned multiple years

Pre 19707
19700
19710
19720
19732
19742
19754
19764
19771
197824
197910
19804
19812
19825
19836
19848
198515
19865
19878
19884
19891
199012
19914
199217
19937
199412
199513
199635
199766
199848
1999157
2000209
200145
200271
2003162
2004221
2005229
2006289
2007124
2008144
2009217
2010190
2011157
201226
201341
20146
20150
20160
20170
Total2614