*Excludes Observations that spanned multiple years

Pre 19708
19700
19712
19720
19730
19740
19750
19760
19770
19780
19790
19800
19810
19822
19830
19842
198566
1986105
1987127
1988385
198940
199023
1991188
199267
1993204
1994103
1995260
1996116
1997130
199819
1999100
200099
200172
200236
200376
200470
200571
200661
200764
200869
200969
201079
201161
201279
201381
201468
201578
201694
201771
201862
201977
202057
2021123
202267
202347
20240
Total3678