These data describe large fire insurance claims 
  in Denmark from Thursday 3rd January 1980 until
  Monday 31st December 1990.
  The data are contained in a numeric vector.
  The dates of each observation are contained in a times
  attribute, which is an object of class "POSIXct" (see
  DateTimeClasses).
  They were supplied by Mette Rytgaard of Copenhagen Re. 
  Note that these data form an irregular time series.
data(danish)A numeric vector containing 2167 observations, with a
  times attribute which is a POSIXct object
  of the same length.