Running an aseptic process is not only influenced by the process design and the parameters during operation, e.g. steam temperatures during SIP, but also the usage of components within those systems. Those components need to fulfill certain design criteria with regards to cleanability and reduced risk of contamination.
Poll: Should the UK’s railways be renationalised?
I'd hate to be disingenuous so I've replotted the data with the first trendline from 1946 to 1977 and the second using your chosen dates 1983 to 2018....