What is the CDT of Fiscal year 2020 expressed as a percentage of Total CDT?
{"2020": {"CDT": 675, "GXS GER": 1012, "GXS PHP": 161}, "2021": {"CDT": 758, "GXS GER": 1011, "GXS PHP": 153}, "2022": {"CDT": 832, "GXS GER": 1044, "GXS PHP": 352}, "2023": {"CDT": 933, "GXS GER": 1043, "GXS PHP": 208}, "2024": {"CDT": 1041, "GXS GER": 1050, "GXS PHP": 272}, "2025 to 2028": {"CDT": 6009, "GXS GER": 5308, "GXS PHP": 2389}, "Total": {"CDT": 10248, "GXS GER": 10468, "GXS PHP": 3535}}
cdts = df["2020"]["CDT"]
total_cdts = df["Total"]["CDT"]
answer = cdts / total_cdts * 100.0