series,year,first_seen_current_key,first_seen_k3,first_seen_k5,flag
all_issuers,2010,7835,7835,7835,left-censored
all_issuers,2011,6679,6679,6679,
all_issuers,2012,6444,6444,6444,
all_issuers,2013,6286,6385,6286,
all_issuers,2014,6732,7004,6732,
all_issuers,2015,6675,7092,6734,
all_issuers,2016,6240,6710,6372,
all_issuers,2017,6490,7120,6725,
all_issuers,2018,6815,7529,7115,
all_issuers,2019,6837,7644,7208,
all_issuers,2020,7212,8010,7649,
all_issuers,2021,8216,9191,8732,
all_issuers,2022,8158,9135,8689,
all_issuers,2023,7977,9061,8557,
all_issuers,2024,7819,8954,8500,
all_issuers,2025,7990,9252,8719,
all_issuers,2026,6694,7778,7342,partial year
fixed_2010_cohort,2010,7819,7819,7819,left-censored
fixed_2010_cohort,2011,6533,6533,6533,
fixed_2010_cohort,2012,6125,6125,6125,
fixed_2010_cohort,2013,5602,5701,5602,
fixed_2010_cohort,2014,5583,5852,5583,
fixed_2010_cohort,2015,5288,5700,5347,
fixed_2010_cohort,2016,4810,5260,4941,
fixed_2010_cohort,2017,4674,5274,4907,
fixed_2010_cohort,2018,4719,5373,5009,
fixed_2010_cohort,2019,4496,5235,4852,
fixed_2010_cohort,2020,4380,5069,4779,
fixed_2010_cohort,2021,4505,5327,4972,
fixed_2010_cohort,2022,4447,5224,4902,
fixed_2010_cohort,2023,4251,5098,4752,
fixed_2010_cohort,2024,4085,4953,4663,
fixed_2010_cohort,2025,3926,4858,4518,
fixed_2010_cohort,2026,3192,3958,3697,partial year