*Excludes Observations that spanned multiple years

Pre 1970112
19702
19710
19721
19732
19744
19751
19761
197717
19786
19792
19805
19810
19820
19830
19840
19850
19861
19870
19880
19890
19901
19910
19920
19930
19940
19950
19962
199770
1998160
1999472
2000128
200138
200228
200334
200449
200511
2006177
20071875
2008719
2009138
20101220
20111164
2012318
201395
2014294
201591
20163119
201798
201819
201921
202023
202129
202223
20232
20243
Total10575