Year	Percent
1950	7.79887
1955	7.60142
1960	7.85809
1965	7.94866
1970	7.13322
1975	6.37327
1980	5.78921
1985	5.67123
1990	5.61396
1995	5.72823
2000	5.3764
2005	5.30457
2010	5.55156
2015	5.48987
2020	5.49692
2025	5.35299
2030	5.17783
2035	5.07134
2040	5.0923
2045	5.15736
2050	5.18839
2055	5.17017
2060	5.11163
2065	5.06042
2070	5.04333
2075	5.05665
2080	5.06178
2085	5.04255
2090	4.98821
2095	4.92403
2100	4.87199