COUNTRY(
id: VARCHAR(255),
name: VARCHAR(255),
income_group: VARCHAR(255)
percentage_snapshot_agriculture: NUMERIC,
percentage_snapshot_industry: NUMERIC,
percentage_snapshot_service: NUMERIC
)
YEAR( date: INT, is_snapshot: BOOLEAN )
COUNTRY_IN_YEAR(
country_id: VARCHAR(255),
year: INT,
industry_share: NUMERIC,
gdp: NUMERIC,
population: INT,
emission: NUMERIC
)