Year	Percent
1950	9.26018
1955	10.25203
1960	10.24395
1965	9.89857
1970	10.40238
1975	9.55497
1980	10.31714
1985	9.93867
1990	9.29153
1995	7.59943
2000	6.44043
2005	6.33802
2010	6.63012
2015	7.31862
2020	6.99555
2025	6.18849
2030	5.55931
2035	5.31907
2040	5.47557
2045	5.72606
2050	5.78571
2055	5.60297
2060	5.33105
2065	5.1643
2070	5.17604
2075	5.27838
2080	5.34894
2085	5.29829
2090	5.15038
2095	5.00719
2100	4.9404