An example (1)

table0

## # A tibble: 3 × 5
##   country     cases_1999 cases_2000 population_1999 population_2000
##   <chr>            <dbl>      <dbl>           <dbl>           <dbl>
## 1 Afghanistan        745       2666        19987071        20595360
## 2 Brazil           37737      80488       172006362       174504898
## 3 China           212258     213766      1272915272      1280428583