Year	Percent
1950	7.75188
1955	7.43787
1960	7.07719
1965	6.69335
1970	6.51218
1975	6.34724
1980	6.28155
1985	6.32464
1990	7.12386
1995	7.55297
2000	7.55566
2005	7.23025
2010	7.51423
2015	7.86283
2020	8.01383
2025	7.87422
2030	7.58771
2035	7.34413
2040	7.6719
2045	8.83772
2050	10.45477
2055	12.27752
2060	14.22062
2065	15.83501
2070	17.38991
2075	19.30793
2080	21.26516
2085	23.04365
2090	24.59181
2095	26.01135
2100	27.34847