重构r和ggplot2的csv数据

I'm new to R and ggplot2. I have a csv file with beverage consumption data. The first column is the Year, and then the next 9 columns are beverage types like, coffee, tea, soda, etc., with values for the consumption amount for the year value of that row. The data covers a 41 year period. I've been researching this and trying many things. I can easily create a dot plot for any one type of beverage with ggplot. I'm new to R and ggplot2. I have a csv file wit