2015:

:single: 
  :lower_income_limit: 116000
  :upper_income_limit: 131000
  :contribution_limit: 5500
  :minimum_phase_out: 200
:head_of_household: 
  :lower_income_limit: 116000
  :upper_income_limit: 131000
  :contribution_limit: 5500
  :minimum_phase_out: 200
:married_filing_jointly: 
  :lower_income_limit: 183000
  :upper_income_limit: 193000
  :contribution_limit: 11000
  :minimum_phase_out: 400
:catch_up_contribution: 1000
:catch_up_age: 50

2016:

:single: 
  :lower_income_limit: 117000
  :upper_income_limit: 132000
  :contribution_limit: 5500
  :minimum_phase_out: 200
:head_of_household: 
  :lower_income_limit: 117000
  :upper_income_limit: 132000
  :contribution_limit: 5500
  :minimum_phase_out: 200
:married_filing_jointly: 
  :lower_income_limit: 184000
  :upper_income_limit: 194000
  :contribution_limit: 11000
  :minimum_phase_out: 400
:catch_up_contribution: 1000
:catch_up_age: 50

2017:

:single: 
  :lower_income_limit: 118000
  :upper_income_limit: 133000
  :contribution_limit: 5500
  :minimum_phase_out: 200
:head_of_household: 
  :lower_income_limit: 118000
  :upper_income_limit: 133000
  :contribution_limit: 5500
  :minimum_phase_out: 200
:married_filing_jointly: 
  :lower_income_limit: 186000
  :upper_income_limit: 196000
  :contribution_limit: 11000
  :minimum_phase_out: 400
:catch_up_contribution: 1000
:catch_up_age: 50

2018:

:single: 
  :lower_income_limit: 120000
  :upper_income_limit: 135000
  :contribution_limit: 5500
  :minimum_phase_out: 200
:head_of_household: 
  :lower_income_limit: 120000
  :upper_income_limit: 135000
  :contribution_limit: 5500
  :minimum_phase_out: 200
:married_filing_jointly: 
  :lower_income_limit: 189000
  :upper_income_limit: 199000
  :contribution_limit: 11000
  :minimum_phase_out: 400
:catch_up_contribution: 1000
:catch_up_age: 50

2019:

:single: 
  :lower_income_limit: 122000
  :upper_income_limit: 137000
  :contribution_limit: 6000
  :minimum_phase_out: 200
:head_of_household: 
  :lower_income_limit: 122000
  :upper_income_limit: 137000
  :contribution_limit: 6000
  :minimum_phase_out: 200
:married_filing_jointly: 
  :lower_income_limit: 193000
  :upper_income_limit: 203000
  :contribution_limit: 12000
  :minimum_phase_out: 400
:catch_up_contribution: 1000
:catch_up_age: 50

2020:

:single: 
  :lower_income_limit: 124000
  :upper_income_limit: 139000
  :contribution_limit: 6000
  :minimum_phase_out: 200
:head_of_household: 
  :lower_income_limit: 124000
  :upper_income_limit: 139000
  :contribution_limit: 6000
  :minimum_phase_out: 200
:married_filing_jointly: 
  :lower_income_limit: 196000
  :upper_income_limit: 206000
  :contribution_limit: 12000
  :minimum_phase_out: 400
:catch_up_contribution: 1000
:catch_up_age: 50

2021:

:single: 
  :lower_income_limit: 125000
  :upper_income_limit: 140000
  :contribution_limit: 6000
  :minimum_phase_out: 200
:head_of_household: 
  :lower_income_limit: 125000
  :upper_income_limit: 140000
  :contribution_limit: 6000
  :minimum_phase_out: 200
:married_filing_jointly: 
  :lower_income_limit: 198000
  :upper_income_limit: 208000
  :contribution_limit: 12000
  :minimum_phase_out: 400
:catch_up_contribution: 1000
:catch_up_age: 50