graphing__exercise-data.xlsx
Sheet1
| Year | RW | PPT |
| 1940 | 0.566 | 6.1 |
| 1941 | 0.755 | 4.58 |
| 1942 | 1.068 | 6.33 |
| 1943 | 0.874 | 8.68 |
| 1944 | 0.903 | 5.88 |
| 1945 | 1.074 | 10.72 |
| 1946 | 1.233 | 6.24 |
| 1947 | 0.915 | 8.84 |
| 1948 | 1.167 | 8.7 |
| 1949 | 1.073 | 8.11 |
| 1950 | 1.29 | 12.06 |
| 1951 | 0.887 | 9.58 |
| 1952 | 0.745 | 7.4 |
| 1953 | 1.353 | 10.79 |
| 1954 | 0.799 | 5.01 |
| 1955 | 0.617 | 6.4 |
| 1956 | 0.808 | 4.36 |
| 1957 | 0.87 | 8.1 |
| 1958 | 1.005 | 2.48 |
| 1959 | 1.367 | 7.35 |
| 1960 | 1.124 | 13.22 |
| 1961 | 0.743 | 3.04 |
| 1962 | 0.5 | 8.28 |
| 1963 | 0.677 | 7.52 |
| 1964 | 1.812 | 10.4 |
| 1965 | 1.538 | 4.97 |
| 1966 | 1.289 | 7.93 |
| 1967 | 0.693 | 4.12 |
| 1968 | 0.531 | 3.93 |
| 1969 | 0.837 | 8.09 |
| 1970 | 1.412 | 4.29 |
| 1971 | 0.893 | 5.18 |
| 1972 | 0.701 | 1.48 |
| 1973 | 0.817 | 7.6 |
| 1974 | 0.844 | 6.95 |
| 1975 | 1.075 | 6.23 |
| 1976 | 0.66 | 5.5 |
| 1977 | 0.522 | 6.5 |
| 1978 | 1.012 | 3.4 |
| 1979 | 1.399 | 14.29 |
| 1980 | 0.77 | 4.24 |
| 1981 | 0.891 | 4.69 |
| 1982 | 1.637 | 9.14 |
| 1983 | 1.153 | 6.64 |
| 1984 | 1.07 | 5.26 |
| 1985 | 0.966 | 6.64 |
| 1986 | 0.837 | 4.3 |
| 1987 | 0.561 | 6.92 |
| 1988 | 1.178 | 9.41 |
| 1989 | 0.85 | 7.26 |
| 1990 | 0.723 | 2.93 |
| 1991 | 1.125 | 3.73 |
| 1992 | 0.86 | 5.41 |
| 1993 | 0.932 | 5.2 |
| 1994 | 1.122 | 7.92 |
| 1995 | 1.101 | 5.91 |
| 1996 | 0.93 | 4.43 |
| 1997 | 1.092 | 6.45 |
| 1998 | 1.206 | 8.22 |
| 1999 | 0.753 | 7.4 |
| 2000 | 0.733 | 6.97 |
| 2001 | 0.88 | 13.24 |
| 2002 | 0.896 | 5.24 |
| 2003 | 1.41 | 4.92 |