Update ogphl_default_parameters.json

[daxfabella]

Link to changes and data sources: https://docs.google.com/document/d/1L3QaVkTT0qlKRsC6lu2L8_HxHq-sJ8zmpSjItVmdBV0/edit?usp=drive_link

[SeaCelo]

Confirmed locally that the PR runs end-to-end. Ran examples/run_og_phl.py with update_from_api=False to test the JSON values in isolation. Both baseline and reform (corporate income tax cut to 20%, debt ratio raised to 1.15) converge cleanly.

Percentage changes vs baseline:

Variable	2026	2027	2028	2029	2030	2031	2032	2033	2034	2035	2026-2035	SS
GDP ($Y_t$)	0.74	0.72	0.73	0.72	0.72	0.71	0.70	0.70	0.69	0.69	0.71	0.64
Consumption ($C_t$)	0.41	0.60	0.45	0.48	0.51	0.53	0.55	0.56	0.57	0.58	0.52	0.67
Capital Stock ($K_t$)	1.35	1.32	1.33	1.31	1.30	1.30	1.29	1.28	1.27	1.26	1.30	1.19
Labor ($L_t$)	0.03	-0.00	0.01	-0.00	-0.01	-0.02	-0.02	-0.03	-0.03	-0.04	-0.01	-0.08
Real interest rate ($r_t$)	0.04	0.07	0.09	0.11	0.12	0.13	0.14	0.15	0.16	0.17	0.12	0.23
Wage rate ($w_t$)	0.71	0.72	0.72	0.72	0.73	0.73	0.73	0.73	0.73	0.73	0.72	0.72

[SeaCelo]

@daxfabella
Updating the calibration docs and just need one detail to make alpha_T reproducible:

For alpha_T = 0.0448 (World Bank WDI 2024): which WDI indicator(s) and what formula?

[daxfabella]

@daxfabella Updating the calibration docs and just need one detail to make alpha_T reproducible:

For alpha_T = 0.0448 (World Bank WDI 2024): which WDI indicator(s) and what formula?

@SeaCelo this is from our previous discussion on the calibration on government transfers, since we could not determine the original IMF source: #45

The values are from 2023 not 2024, and I made a correction on the docs. Another calibration is welcome if we can trace the source. See screenshot for reference:

[SeaCelo]

@daxfabella Thanks for tracing this back to #45 — really helpful. Agreed that the World Bank WDI source is a better call here. The old IMF value was a workaround and its link is broken anyway, so this is much cleaner. I'll update the docs to use 2023 per your correction.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 84.45%. Comparing base (4c2ecae) to head (dd96244).
⚠️ Report is 2 commits behind head on main.

Additional details and impacted files

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  Coverage   84.45%   84.45%           
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  Files          13       13           
  Lines         637      637           
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  Hits          538      538           
  Misses         99       99           

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[SeaCelo]

@daxfabella thanks for your work on this. Great updates. Merging