Year	Percent
1950	9.58233
1955	8.11659
1960	7.73147
1965	7.99626
1970	7.5768
1975	6.91403
1980	5.89301
1985	5.00117
1990	5.42965
1995	6.23527
2000	6.10593
2005	5.82464
2010	5.6689
2015	5.0239
2020	5.15585
2025	5.41832
2030	5.521
2035	5.4308
2040	5.27056
2045	5.13264
2050	5.11011
2055	5.20198
2060	5.28931
2065	5.28092
2070	5.18505
2075	5.06955
2080	5.00251
2085	4.99583
2090	5.01394
2095	5.01111
2100	4.95625