Monthly US government 10-year bond yields (percent pa) from Jan 1994 to May 2004
Source
Hyndman, R.J., Koehler, A.B., Ord, J.K., and Snyder, R.D., (2008) Forecasting with exponential smoothing: the state space approach, Springer.
Examples
plot(bonds, main = "US 10-year bonds yield", ylab = "Percentage per annum", xlab = "Year")