c_cpi_u_extended.RdThe monthly, quarterly, or annual C-CPI-U series extended to 1937 through the present, based on CPI-U-RS, CPI-U, and CPI-U-X1.
c_cpi_u_extended_monthly_nsa
c_cpi_u_extended_monthly_sa
c_cpi_u_extended_quarterly_nsa
c_cpi_u_extended_quarterly_sa
c_cpi_u_extended_annualThe extended C-CPI-U series uses the C-CPI-U since 2000 and extends it retroactively by merging it to the CPI-U-RS (1978-1999), CPI-U-X1 (1967-1977), and CPI-U (1966 and before).
The data frames c_cpi_u_extended_monthly_nsa and
c_cpi_u_extended_monthly_sa contain, respectively, the
not-seasonally and seasonally adjusted price index levels of the
extended C-CPI-U. They have three columns:
numeric year
numeric calendar month (1-12)
value of the C-CPI-U extended price index
The data frames c_cpi_u_extended_quarterly_nsa and
c_cpi_u_extended_quarterly_sa are the quarterly versions of these
series. They have three columns:
numeric year
numeric calendar quarter (1-4)
value of the C-CPI-U extended price index
The data frame c_cpi_u_extended annual contains the annual
price index level of the extended C-CPI-U. It has two columns:
numeric year
value of the C-CPI-U extended price index
The seasonal adjustment in c_cpi_u_extended_monthly_sa is simply
a multiplication of the non-seasonally adjusted
c_cpi_u_extended_monthly_nsa values by the ratio of the
cpi_u_monthly_sa to cpi_u_monthly_nsa.
The quarterly c_cpi_u_extended_quarterly_nsa and c_cpi_u_extended_quarterly_sa
series are the quarterly means of their respective monthly series.
For annual statistics, the U.S. Census Bureau currently uses a similar combination of price indexes to extend the C-CPI-U: https://www.census.gov/topics/income-poverty/income/guidance/current-vs-constant-dollars.html.
c_cpi_u_extended_annual
#> # A tibble: 87 × 2
#> year c_cpi_u_extended
#> <dbl> <dbl>
#> 1 1937 9.8
#> 2 1938 9.6
#> 3 1939 9.5
#> 4 1940 9.5
#> 5 1941 10
#> 6 1942 11.1
#> 7 1943 11.8
#> 8 1944 12
#> 9 1945 12.3
#> 10 1946 13.3
#> # ℹ 77 more rows